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+ The Project Gutenberg eBook of Noteworthy Mammals from Sinaloa, Mexico, by J. Knox Jones, Jr., Ticul Alvarez, and M. Raymond Lee.
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+
+The Project Gutenberg EBook of Noteworthy Mammals from Sinaloa, Mexico, by
+J. Knox Jones, Jr. and Ticul Alvarez and M. Raymond Lee
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+
+Title: Noteworthy Mammals from Sinaloa, Mexico
+
+Author: J. Knox Jones, Jr.
+ Ticul Alvarez
+ M. Raymond Lee
+
+Release Date: March 18, 2010 [EBook #31683]
+
+Language: English
+
+Character set encoding: UTF-8
+
+*** START OF THIS PROJECT GUTENBERG EBOOK MAMMALS ***
+
+
+
+
+Produced by Chris Curnow, Simon Gardner and the Online
+Distributed Proofreading Team at http://www.pgdp.net
+
+
+
+
+
+
+</pre>
+
+
+
+
+<p class="center"><span class="smcap">University of Kansas Publications Museum of Natural History</span></p>
+
+<p class="center">Volume 14, No. 12, pp. 145-159, 1 fig. in text</p>
+
+<p class="center">May 18, 1962</p>
+
+
+
+
+<h1>Noteworthy Mammals from Sinaloa, Mexico</h1>
+
+<h2> J. KNOX JONES, JR., TICUL ALVAREZ, AND M. RAYMOND LEE</h2>
+
+
+<p class="center"><span class="smcap">University of Kansas</span>
+<br />
+<span class="smcap">Lawrence</span>
+<br />
+1962</p>
+
+<p class="center"><span class="smcap">University of Kansas Publications, Museum of Natural History</span></p>
+
+<p class="center">Editors: E. Raymond Hall, Chairman, Henry S. Fitch,
+Theodore H. Eaton, Jr.</p>
+
+<p class="center">Volume 14, No. 12, pp. 145-159, 1 fig. in text
+<br />
+Published May 18, 1962</p>
+
+
+<p class="center"><span class="smcap">University of Kansas</span>
+<br />
+Lawrence, Kansas</p>
+
+<p class="center">PRINTED BY
+<br />
+JEAN M. NEIBARGER, STATE PRINTER
+<br />
+TOPEKA, KANSAS</p>
+
+<p class="center">1962</p>
+
+<p class="center">29-3000
+</p>
+
+
+
+<h3>Noteworthy Mammals from Sinaloa, Mexico</h3>
+
+<p class="center">BY</p>
+
+<h4>J. KNOX JONES, JR., TICUL ALVAREZ, and M. RAYMOND LEE</h4>
+
+
+<p>In several of the past twelve years field parties from the Museum
+of Natural History have collected mammals in the Mexican state of
+Sinaloa. Most of the collections contained only a modest number
+of specimens because they were made by groups that stopped for
+short periods on their way to or from other areas, but several collections
+are extensive. Field work by representatives of this institution
+now is underway in Sinaloa with the aim of acquiring materials
+suitable for treating the entire mammalian fauna of that state.</p>
+
+<p>Among the mammals thus far obtained are specimens of twenty
+species that represent significant extensions of known range, are of
+especial taxonomic or zoogeographic interest, or that complement
+published information, and it is these records that are reported
+herein.</p>
+
+<p>The following persons obtained specimens mentioned beyond:
+J. R. Alcorn (1950); J. R. and A. A. Alcorn (1954 and 1955); R. H.
+Baker and a party of students (1955); W. L. Cutter (1957); S. Anderson
+and a party of students (1959); M. R. Lee (1960 and 1961);
+and J. K. Jones, Jr., accompanied by R. R. Patterson and R. G.
+Webb (1961). The Kansas University Endowment Association and
+the American Heart Association provided funds that helped to defray
+the cost of field operations.</p>
+
+<p>In the accounts that follow, all measurements are in millimeters
+and all catalogue numbers refer to the mammal collection of the
+Museum of Natural History, The University of Kansas. Placenames
+associated with specimens examined are indicated on the
+accompanying map (<a href="#fig_1">Fig. 1</a>).</p>
+
+<p><i>Notiosorex crawfordi</i> (Coues).&mdash;A non-pregnant female (75184)
+was obtained on November 29, 1957, at El Fuerte by W. L.
+Cutter. Comparison of this specimen with topotypes of <i>N. evotis</i>
+(see below) and with undoubted examples of <i>N. crawfordi</i> proves
+our specimen to be referable to the latter. We presume that the
+shrew reported as <i>evotis</i> on geographic grounds from El Carrizo
+by Hooper (1961:120) also is referable to <i>crawfordi</i>. External
+measurements of our female are: total length, 77; length of tail, 20
+(tip missing); length of hind foot, 11; length of ear from notch, 8;
+weight in grams, 4. Cranial measurements of this individual are
+given in <a href="#table_1">Table 1</a>.</p>
+
+<hr style="width: 45%;" />
+
+<div class="figcenter" style="width: 499px;">
+<a name="fig_1" id="fig_1"></a>
+<a href="images/i004.png">
+<img src="images/i004_tn.png" width="499" height="600" alt="Fig. 1. Map of Sinaloa on which are plotted symbols representing placenames
+mentioned in text." title="Fig. 1" />
+</a>
+<span class="caption">Fig. 1. Map of Sinaloa on which are plotted symbols representing placenames
+mentioned in text. From north to south, these are: El Fuerte; San
+Miguel; Los Mochis; Guamúchil; Terrero; Pericos; Culiacán; El Dorado;
+Piaxtla and Camino Reál (one symbol); Pánuco; Mazatlán; Matatán; Rosario;
+Escuinapa; Concepción.</span>
+</div>
+
+<hr style="width: 45%;" />
+
+<p><i>Notiosorex evotis</i> (Coues).&mdash;Four topotypes (85533-36), all
+males, were collected by Lee at Mazatlán. One was caught on December
+17, 1960, in a museum special trap set "in low weeds near
+thorn bush" in a sandy field at the north edge of Mazatlán, less than
+a mile from the ocean. A few trees and some grasses grew in this
+area; <i>Mus musculus</i> and <i>Perognathus pernix</i> were taken in the same
+line of traps. Additional trapping at this locality failed to produce
+more shrews. The other three specimens were captured alive on
+February 1 (one) and February 2 (two), 1961, in the wake of a
+bulldozer that was clearing land adjacent to the place where the
+first specimen was trapped. The ground cover being cleared away
+consisted mostly of dry, dense weeds and short, thorny scrub; the
+latter was sparse in some places and formed dense thickets in others.
+One individual that was kept alive for a short time in a can ate
+crickets and roaches readily and ate one spider, but refused isopods.
+On one occasion it ate six crickets in about three hours. Wet oatmeal
+and oatmeal mixed with peanut butter both were refused.</p>
+
+<hr style="width: 45%;" />
+
+<p class="center"><a name="table_1" id="table_1"></a><span class="smcap">Table 1. Cranial Measurements of Two Species of Notiosorex.</span></p>
+
+<div class="center">
+<table border="0" cellpadding="4" cellspacing="0" summary="">
+<tr><th align="left">Catalogue number, or number of specimens averaged, and sex</th>
+<th align="left">Condylobasal length</th>
+<th align="left">Interorbital constriction</th>
+<th align="left">Maxillary breadth</th>
+<th align="left">Cranial breadth</th>
+<th align="left">Palatal length</th>
+<th align="left">Length of maxillary tooth-row</th></tr>
+<tr><td align="center" colspan="7"><i>Notiosorex crawfordi</i>, Huachuca Mts., Arizona<a name="FNanchor_A_1" id="FNanchor_A_1"></a><a href="#Footnote_A_1" class="fnanchor">[A]</a></td></tr>
+<tr><td align="left">Average 6 (2♂, 4♀)</td><td align="left">16.01</td><td align="left">3.72</td><td align="left">5.08</td><td align="left">8.32</td><td align="left">6.59</td><td align="left">5.93</td></tr>
+<tr><td align="left">Minimum</td><td align="left">15.7</td><td align="left">3.6</td><td align="left">4.9</td><td align="left">7.8</td><td align="left">6.3</td><td align="left">5.8</td></tr>
+<tr><td align="left">Maximum</td><td align="left">16.5</td><td align="left">3.85</td><td align="left">5.2</td><td align="left">8.8</td><td align="left">7.15</td><td align="left">6.2</td></tr>
+<tr><td align="center" colspan="7">El Fuerte, Sinaloa</td></tr>
+<tr><td align="left">75184 KU, ♀</td><td align="left">16.5</td><td align="left">3.7</td><td align="left">5.0</td><td align="left">8.4</td><td align="left">6.9</td><td align="left">6.1</td></tr>
+<tr><td align="center" colspan="7">SW Guadalajara, Jalisco</td></tr>
+<tr><td align="left">33318 KU, ♂</td><td align="left">..</td><td align="left">3.6</td><td align="left">4.9</td><td align="left">..</td><td align="left">7.1</td><td align="left">5.7</td></tr>
+<tr><td align="left">42583 KU, ?</td><td align="left">15.0+</td><td align="left">3.5</td><td align="left">4.6</td><td align="left">..</td><td align="left">6.6</td><td align="left">5.4±</td></tr>
+<tr><td align="left">42584 KU, ?</td><td align="left">..</td><td align="left">3.6</td><td align="left">4.9</td><td align="left">..</td><td align="left">7.1±</td><td align="left">6.1±</td></tr>
+<tr><td align="center" colspan="7">2 mi. E La Palma, Michoacán</td></tr>
+<tr><td align="left">42586 KU, ?</td><td align="left">..</td><td align="left">3.8</td><td align="left">4.9</td><td align="left">..</td><td align="left">6.9</td><td align="left">..</td></tr>
+<tr><td align="left">42587 KU, ?</td><td align="left">..</td><td align="left">3.8</td><td align="left">4.8</td><td align="left">..</td><td align="left">6.9</td><td align="left">6.0</td></tr>
+<tr><td align="left">42588 KU, ?</td><td align="left">..</td><td align="left">..</td><td align="left">4.9</td><td align="left">..</td><td align="left">6.9</td><td align="left">6.2</td></tr>
+<tr><td align="center" colspan="7"><i>Notiosorex evotis</i>, Mazatlán, Sinaloa</td></tr>
+<tr><td align="left">Average 4 (♂)</td><td align="left">17.68</td><td align="left">4.05</td><td align="left">5.37</td><td align="left">8.68</td><td align="left">7.60</td><td align="left">6.58</td></tr>
+<tr><td align="left">Minimum</td><td align="left">17.4</td><td align="left">4.0</td><td align="left">5.3</td><td align="left">8.5</td><td align="left">7.5</td><td align="left">6.5</td></tr>
+<tr><td align="left">Maximum</td><td align="left">17.9</td><td align="left">4.1</td><td align="left">5.4</td><td align="left">8.8</td><td align="left">7.7</td><td align="left">6.7</td></tr>
+</table></div>
+
+<div class="footnote"><p><a name="Footnote_A_1" id="Footnote_A_1"></a><a href="#FNanchor_A_1"><span class="label">[A]</span></a> After Hoffmeister and Goodpaster, 1954:51.</p></div>
+
+<hr style="width: 45%;" />
+
+<blockquote><p>Average and extreme external measurements of the four males are as follows:
+total length, 93.2 (90-98); length of tail, 25.5 (23-27); length of hind
+foot, 11.9 (11-13); length of ear from notch, 7.7 (7-8); weight in grams, 5.4
+(4.4-6.3). Cranial measurements are given in Table 1.</p></blockquote>
+
+<p><i>Notiosorex evotis</i> was described by Coues (1877:652) on the basis
+of a single specimen, obtained at Mazatlán by Ferdinand Bischoff
+in 1868, that originally had at least the partial skull inside. Subsequently
+the skull was removed and evidently lost (Poole and
+Schantz, 1942:181). Coues named <i>evotis</i> as a species distinct from
+<i>crawfordi</i> (described by him in the same paper) on the basis of
+larger size, shorter tail, and alleged slight differences in color. He
+did not describe the skull, but did note that the dentition was "substantially
+the same as that of <i>N. crawfordi</i>." Evidently, the only
+other correctly identified specimen of <i>evotis</i> on record is an individual
+from Mazatlán in the British Museum, the skull of which
+was figured by Dobson (1890:pl. 23, fig. 20).</p>
+
+<p>Merriam (1895:34) characterized <i>evotis</i>, known to him by only
+the holotype, as: "Similar to <i>N. crawfordi</i>, but slightly larger and
+darker." He did not examine the skull, which by that time had
+been "lost or mislaid." Merriam reduced <i>evotis</i> to subspecific status
+under <i>crawfordi</i> with the following remarks: "In the absence of
+sufficient material of <i>N. evotis</i>, it is impossible to determine its exact
+relations to <i>crawfordi</i>. Dobson did not recognize it as distinct, but
+figured its teeth under the name <i>crawfordi</i> [<i>loc. cit.</i>, possibly a
+<i>lapsus</i>]. For the present it seems best to retain it as a subspecies."</p>
+
+<p>Merriam's arrangement of <i>evotis</i> as a subspecies of <i>crawfordi</i> has
+been followed by subsequent workers, mostly, we suppose, because
+additional material of undoubted <i>evotis</i> has not until now been
+available. Comparisons of our four specimens with specimens
+(from Jalisco, Sinaloa and Tamaulipas) and published descriptions
+and measurements (see especially Hoffmeister and Goodpaster,
+1954:46-47, 51) of <i>crawfordi</i> reveal that <i>evotis</i> has a longer body
+and hind foot than <i>crawfordi</i> but a relatively (sometimes actually)
+shorter tail and ear, and a distinctly larger, heavier skull (<a href="#table_1">see Table
+1</a>). The upper parts of our specimens average pale brownish
+gray and are paler, not darker, than the upper parts of <i>crawfordi</i>.
+But, all of the latter were obtained in the warm months of the year
+except one November-taken individual from El Fuerte, Sinaloa, the
+dorsal pelage of which approaches in color that of the darkest of
+the <i>evotis</i>. The pelage of both kinds probably is paler in winter
+than in summer and may be indistinguishable in the same season.
+Ventrally, all four <i>evotis</i> are grayish white, faintly to moderately
+tinged with brownish buff.</p>
+
+<p><i>Notiosorex evotis</i> differs cranially from <i>Notiosorex crawfordi</i> as
+follows: larger (see measurements); mesopterygoid fossa squared
+rather than broadly U-shaped anteriorly; rounded process on maxillary
+at posterior border of infraorbital canal well developed (faint
+or lacking in <i>crawfordi</i>); occipital condyles smaller and, in lateral
+view, elevated above basal plane of skull; upper molars slightly
+more crowded in occlusal view. These differences, although admittedly
+slight, appear to be constant in the specimens we have
+seen, but ought to be used cautiously owing to the small samples
+studied.</p>
+
+<p>Shrews of the genus <i>Notiosorex</i> have been reported twice previously
+from localities in west-central México, other than from Mazatlán,
+as follows: 21 mi. SW Guadalajara (remains from owl pellets)
+and 13 mi. S, 15 mi. W Guadalajara, Jalisco, by Twente and
+Baker (1951:120-121); and Cerrito Loco, 2 mi. E La Palma, Michoacán
+(remains from owl pellets), by Baker and Alcorn (1953:116).
+The remains were referred to <i>evotis</i> on geographic grounds in one
+instance and were so referred inferentially in the other. Examination
+of the specimens upon which these reports were based reveals
+that all are <i>crawfordi</i> on the basis of characters previously cited. As
+a result, <i>N. evotis</i> is known only from the type locality at Mazatlán,
+whereas <i>N. crawfordi</i> is widely distributed on the Mexican Plateau
+as far south as Jalisco and northern Michoacán, and occurs on the
+west side of the Sierra Occidental as far south as northern Sinaloa.</p>
+
+<p>The two kinds obviously are closely related and intergradation
+eventually may be demonstrated between them. But, for the present,
+we adopt a conservative course and treat <i>evotis</i> as a full species
+owing to its distinctive features, restricted geographic distribution,
+and the lack of evidence of intergradation between it and <i>crawfordi</i>.</p>
+
+<p><i><b>Balantiopteryx plicata pallida</b></i> Burt.&mdash;Thirty-five specimens from
+two adjacent localities along the Río del Fuerte in northern Sinaloa,
+3 mi. NE San Miguel, 300 ft. (84944-48) and 10 mi. NNE Los Mochis
+(60572-75, 60667-78, 60681-94), provide the first records of the
+subspecies from the state. Individuals from both localities were
+shot at dusk as they foraged among trees in the valley of the river.
+Fifteen of 18 females from 10 mi. NNE Los Mochis, collected on
+June 5, 6 and 7, 1955, were pregnant; each contained a single embryo,
+the embryos ranging from 7 to 15 mm. in crown-rump length.
+<i>B. p. pallida</i> previously has been reported from the southern parts
+of Baja California and Sonora.</p>
+
+<p><i><b>Balantiopteryx plicata plicata</b></i> Peters.&mdash;Specimens in the Museum
+of Natural History from the following localities, several of which
+are marginal, document better than previously has been done the
+distribution of this subspecies in Sinaloa: 32 mi. SSE Culiacán
+(60699); 10 mi. SE Escuinapa (68629); 17 mi. SSE Guamúchil
+(60576); 5 mi. NW Mazatlán (85537-61, 85901-04); 1 mi. SE Mazatlán,
+10 ft. (39461-76); 1 mi. S Pericos (60697-98, 60700); ½ mi. E
+Piaxtla (60701); ½ mi. W Rosario, 100 ft. (39477-79); 5 mi. SSE
+Rosario (60702-03); 4 mi. N Terrero (60695-96).</p>
+
+<p>Pregnant females, each with a single embryo, were recorded in
+1954 from 4 mi. N Terrero, 2 (June 9), 1 mi. S Pericos, 2 (June 13),
+and 5 mi. SSE Rosario, 2 (June 20). None of 16 December-taken
+females from 5 mi. NW Mazatlán was pregnant.</p>
+
+<p>The specimen from 17 mi. SSE Guamúchil, preserved in alcohol,
+is provisionally referred to <i>B. p. plicata</i> on geographic grounds inasmuch
+as specimens from the nearby localities of 1 mi. S Pericos
+and 4 mi. N Terrero, although more grayish on the average than
+specimens from southern Sinaloa, are somewhat darker and distinctly
+larger than specimens of <i>B. p. pallida</i> from along the Río del
+Fuerte in northern Sinaloa. Specimens from southern Sinaloa
+average only slightly paler than typical <i>plicata</i> examined from
+southern México and Nicaragua.</p>
+
+<p><i><b>Pteronotus psilotis</b></i> (Dobson).&mdash;A total of six specimens from two
+localities in southern Sinaloa provide the first records from the state
+and are the northernmost records in western México. The two localities
+are: ½ mi. S Concepción, 250 ft. (84987-90); 1 mi. W Matatán
+(84985-86). The two individuals from the last-mentioned place
+extend the known range of the species approximately 275 miles
+north-northwest from a locality 7 mi. W, ½ mi. S Santiago, Colima
+(Anderson, 1956:349), and place the limit of the known distribution
+of <i>P. psilotis</i> farther to the north in western México than in the eastern
+part of the country. We follow Burt and Stirton (1961:24-25)
+in use of the generic name <i>Pteronotus</i> for this species.</p>
+
+<p>The two specimens from 1 mi. W Matatán were shot at late dusk
+as they foraged with other bats, presumably of the same species, low
+over water at the place where the Río San Antonio joins the larger
+Río Baluarte. The four individuals from ½ mi. S Concepción were
+captured in mist nets stretched across the Río de las Cañas at the
+Sinaloa-Nayarit border, and were taken shortly after dark at heights
+of three feet or less above the water. Our six specimens all are
+males. Five are in the reddish color phase and one is in the brownish
+phase.</p>
+
+<blockquote><p>Average and extreme measurements of the six males, which average slightly
+smaller than specimens examined from Colima and Guerrero, are as follows:
+total length, 66.8 (65-69); length of tail, 16.3 (15-18); length of hind foot,
+11.8 (11-12); length of ear from notch, 16.9 (16.5-17.0); length of forearm
+(dry), 41.5 (40.6-42.4); weight in grams, 8.3 (6.9-9.8); greatest length of
+skull, 15.4 (15.2-15.5); zygomatic breadth, 8.3 (8.2-8.4); interorbital constriction,
+3.4 (3.3-3.6); mastoid breadth, 8.7 (8.6-8.8); length of maxillary tooth-row,
+5.8 (5.8-5.9); breadth across M3, 5.4 (5.3-5.6).</p></blockquote>
+
+<p><i><b>Sturnira lilium parvidens</b></i> Goldman.&mdash;The first specimens to be
+reported from Sinaloa are as follows: 32 mi. SSE Culiacán (61087);
+1 mi. S El Dorado (75207); Pánuco, 22 km. NE Concordia (85648-50).
+The three bats from the last-mentioned locality were caught
+after midnight in a mist net stretched across a road adjacent to a
+nearly dry stream bed. The vegetation in the vicinity of the net
+consisted mostly of dry weeds and grass along with some low shrubs,
+but a tree-filled canyon was about one-fourth mile above the net.
+We lack details about the capture of the other two bats.</p>
+
+<p><i>S. l. parvidens</i> has been reported only once from farther north in
+western México than Sinaloa. Anderson (1960:7) recorded five
+specimens from along the Río Septentrión, 1½ mi. SW Tocuina, Chihuahua.</p>
+
+<p><i><b>Artibeus lituratus palmarum</b></i> Allen and Chapman.&mdash;This species
+has been reported once previously from Sinaloa (from 1 mi. S El
+Dorado by Anderson, 1960:3). Six specimens (85668-72, 85674),
+all males, collected on December 23 and 24, 1960, at Pánuco, 22 km.
+NE Concordia, provide the second known occurrence in the state.</p>
+
+<p><i><b>Artibeus toltecus</b></i> (Saussure).&mdash;A male (85666) from Pánuco, 22
+km. NE Concordia, provides the first record of this species from
+Sinaloa and extends the known range northwestward approximately
+182 miles from Ambas Aguas [= 6½ km. SW Amatlán de Jora],
+Nayarit (Andersen, 1908:300). Our specimen was taken on December
+22, 1960, in a mist net placed across a road in an area where
+vegetation consisted mostly of weeds, grasses and shrubs. Two
+<i>Glossophaga soricina leachii</i> and two <i>Choeronycteris mexicana</i> were
+taken in the same net.</p>
+
+<p>Davis' (1958:165-166) key is useful in separating the small Mexican
+members of the genus <i>Artibeus</i>, but we have found some adults
+of <i>toltecus</i> to be smaller than the key indicates. For example, in the
+12 Mexican specimens (Oaxaca, 6, Tamaulipas, 3, Jalisco, 2, Sinaloa,
+1) examined by us the total length of skull varies from 19.7 to
+21.0 and the forearm from 36.3 to 42.6.</p>
+
+<p>Dalquest (1953) and more recently Koopman (1961) regarded
+<i>A. toltecus</i> and the larger <i>A. aztecus</i>, which occurs in the same areas
+but at higher elevations than <i>toltecus</i>, as subspecies of the more
+southerly <i>A. cinereus</i>. Davis (<i>op. cit.</i>), on the other hand, recognized
+<i>toltecus</i>, <i>aztecus</i>, and <i>cinereus</i> as distinct species. More specimens
+of small and medium-sized <i>Artibeus</i> are needed from México
+before this baffling complex can be studied adequately, but on the
+basis of specimens examined we are inclined to agree with Davis
+as concerns the specific distinctness of <i>toltecus</i> and <i>aztecus</i>. In
+Tamaulipas (the mammalian fauna of which is currently under
+study by Alvarez) for example, <i>toltecus</i> is known from Rancho
+Pano Ayuctle at an elevation of 300 feet in tropical deciduous forest,
+whereas <i>aztecus</i> has been taken only four miles away at Rancho del
+Cielo, but at an elevation of 3000 feet in cloud forest. The altitudinal
+difference between ranges of the two kinds in Tamaulipas corresponds
+to that found in Sinaloa (see Koopman, <i>loc. cit.</i>) and is
+of approximately the same magnitude found by Davis at higher elevations
+in Guerrero. This relationship suggests that the two kinds
+are neither subspecies of a single species, nor individual variants
+of a widespread, monotypic species, but probably are two different
+species. We agree that one, most likely the smaller <i>toltecus</i>, may
+eventually prove to be a northern subspecies of <i>cinereus</i>.</p>
+
+<p><i><b>Myotis occultus</b></i> Hollister.&mdash;A single specimen of this species
+(67491) from 1 mi. N, ½ mi. E San Miguel provides the first certain
+record from Sinaloa, and is indistinguishable from specimens from
+Alamos, Sonora, that were referred to <i>occultus</i> by Hall and Dalquest
+(1950:587). Miller and Allen (1928:100) identified a skin alone
+from Escuinapa as <i>occultus</i>, but Hall and Dalquest (<i>loc. cit.</i>) later
+assigned this specimen provisionally to <i>M. fortidens</i> on geographic
+grounds and because it agreed in color with undoubted specimens
+of the latter from Guerrero. Specimens from south of San Miguel
+and north of the undoubted range of <i>fortidens</i> are needed in order
+to ascertain whether the two kinds are distinct species or instead
+only subspecies of a single species.</p>
+
+<p>The Sinaloan bat was taken in a mist net stretched over a drainage
+ditch adjacent to the Río del Fuerte on the night of June 19-20,
+1955, by R. H. Baker. Several other kinds of bats were obtained
+(shot or netted) at the same place, among which was one specimen
+of <i>Myotis velifer</i>. The specimens studied of <i>occultus</i> from Sinaloa
+and Sonora are clearly separable from specimens of <i>velifer</i> from the
+same region (Sonora and northern Sinaloa) in having paler (more
+reddish) pelage, shorter forearm, smaller skull, relatively broader
+rostrum, and four fewer teeth.</p>
+
+<p><i><b>Myotis velifer velifer</b></i> (J. A. Allen).&mdash;Three specimens from the
+following localities in northern Sinaloa provide the first records of
+the species from the state: El Fuerte (75234); Río del Fuerte, 1
+mi. N, ½ mi. E San Miguel (67490); Río del Fuerte, 10 mi. NNW
+Los Mochis (61149). The subspecies <i>M. v. velifer</i> has been reported
+previously from the adjacent states of Chihuahua, Durango,
+and Sonora.</p>
+
+<p>A female (61149) obtained on June 8, 1954, carried a single embryo
+that measured 3 mm. in crown-rump length.</p>
+
+<p><i><b>Lasiurus borealis teliotis</b></i> (H. Allen).&mdash;A female from 10 mi.
+NNW Los Mochis (61172), obtained on June 8, 1954, represents
+the first record of the species from Sinaloa, and is tentatively referred
+to this subspecies. It resembles cranially, but is paler than,
+Californian specimens seen of <i>teliotis</i>.</p>
+
+<p><i><b>Molossus ater nigricans</b></i> Miller.&mdash;This large free-tailed bat previously
+has been reported no farther north in western México than
+the type locality, Acaponeta, Nayarit. Nineteen specimens from
+four different localities in Sinaloa are as follows: 1 mi. SE Camino
+Reál, 400 ft. (85093-99); 32 mi. SSE Culiacán (61279-87); 1 mi. S
+Pericos (61277-78); ½ mi. E Piaxtla (61288). The specimens labeled
+with reference to Camino Reál and Piaxtla were obtained
+along the Río Piaxtla at approximately the same place. Those from
+1 mi. S Pericos extend the known range of the species approximately
+225 miles northwestward.</p>
+
+<p><i>M. a. nigricans</i> is characteristically an early flier. Along the Río
+Piaxtla, 1 mi. SE Camino Reál, where bats probably found daytime
+retreats in the rocky walls of the steep-sided valley of the river, individuals
+first appeared early in the evening when the sun was still
+on the western horizon, but were gone before other species of bats
+were seen. A female from 32 mi. SSE Culiacán, taken on June 18,
+1954, contained one embryo that was 18 mm. in crown-rump length.
+Each of the color phases of the species, reddish (8) and black (11),
+are represented among our specimens. We follow Goodwin (1960)
+in the use of the specific name <i>ater</i> for this bat.</p>
+
+<p><i><b>Dasypus novemcinctus mexicanus</b></i> Peters.&mdash;Two armadillos
+(85402-03) from the valley of the Río del Fuerte, 3 mi. NE San
+Miguel, 300 ft., are the first of the species to be reported from
+northern Sinaloa. They extend the known range northwestward in
+the state approximately 285 miles from Escuinapa (Russell, 1953:25)
+and signal the possible occurrence of <i>D. n. mexicanus</i> in southern
+Sonora. Sign of the armadillo was abundant at the place where
+our two specimens were collected. Because it was felt that the
+species possibly had been introduced along the Río del Fuerte, a
+number of local residents were questioned on the point, but all insisted
+that armadillos were native to the area.</p>
+
+<blockquote><p>External measurements of 85402 (female) and 85403 (male) are, respectively,
+as follows: total length, 725, 748; length of tail, 351, 357; length of
+hind foot, 87, 89; length of ear from notch, 39, 39.</p></blockquote>
+
+<p><i><b>Sylvilagus audubonii goldmani</b></i> (Nelson).&mdash;This cottontail has
+been reported from Sinaloa only from Bacubirito, Culiacán (type
+locality), and Sinaloa (Nelson, 1909:226). Additional records are:
+12 mi. N Culiacán (67561-62); 6 mi. N El Dorado (75263); 6 mi. N,
+1½ mi. E El Dorado (75264-66); 7 mi. NE El Fuerte (81076-77); and
+1 mi. S Pericos (61292-93). Specimens from the vicinity of El Dorado
+extend the known range some 30 miles southward from the
+type locality. A female from 1 mi. S Pericos that was taken on
+June 13, 1954, carried three embryos that measured 29 mm. in
+crown-rump length.</p>
+
+<p><i><b>Sciurus truei</b></i> Nelson.&mdash;Three specimens (61300-02) of this species
+collected by A. A. Alcorn on June 19, 1954, 32 mi. SSE Culiacán
+extend the known range approximately 210 miles south-southeast
+from Guirocoba, Sonora (Burt, 1938:38), and provide the first record
+from Sinaloa. Two of the specimens are females and each was
+pregnant, one with two embryos and the other with three.</p>
+
+<p>Our specimens generally agree in color with <i>S. truei</i>, but are
+larger than typical individuals and in this respect approach <i>S. sinaloensis</i>
+of southern Sinaloa. Probably <i>truei</i> and <i>sinaloensis</i> both are
+only subspecies of the more southerly <i>S. colliaei</i>. The three nominal
+species currently constitute the <i>S. colliaei</i> group in which the presence
+or absence of P3 seems to vary geographically. The tooth frequently
+is absent in the northern <i>truei</i> and usually present (invariably
+in the specimens we have examined) in <i>colliaei</i>. Only one of
+our Sinaloan specimens is accompanied by a skull; in it P3 is present
+on the right side and absent on the left.</p>
+
+<blockquote><p>External measurements of the male and two females are, respectively: total
+length, 512, 508, 504; length of tail, 263, 263, 252; length of hind foot, 64, 63,
+64; length of ear from notch, 28, 29, 28. Cranial measurements of 61300 (a
+female) are: greatest length of skull, 56.2; zygomatic breadth, 32.6; interorbital
+constriction, 17.9; postorbital constriction, 17.9; length of nasals, 17.3;
+alveolar length of maxillary tooth-row (on side lacking P3), 10.9.</p></blockquote>
+
+<p><i><b>Thomomys umbrinus atrovarius</b></i> J. A. Allen.&mdash;Two specimens
+(85104-05) from the valley of the Río Piaxtla, 1 mi. SE Camino
+Reál, 400 ft., resemble the description of <i>atrovarius</i> and agree in
+size, color and most cranial details with a specimen (85744) from
+5 mi. NW Mazatlán. The first-mentioned specimens extend the
+known range of the subspecies some 50 miles northward from Mazatlán
+(Bailey, 1915:96), and indicate the probable occurrence of
+the species at lower elevations in other parts of central Sinaloa.</p>
+
+<p><i><b>Peromyscus merriami goldmani</b></i> Osgood.&mdash;This subspecies has
+been reported previously only from the type locality, Alamos, Sonora.
+Eight specimens were collected in Sinaloa by W. L. Cutter
+in the autumn of 1957 as follows: 6 mi. N, 1½ mi. E El Dorado
+(75368-72); 2½ mi. N El Fuerte (75365-66); El Fuerte (75367).
+The first-mentional locality is approximately 200 miles south-south-east
+of the type locality. All specimens collected by Cutter were
+taken in lowland areas, supporting remarks by Commissaris (1960)
+concerning habitat preferences of <i>P. merriami</i> as compared with
+those of the closely related <i>P. eremicus</i>.</p>
+
+<p>Two of three females from northeast of El Dorado were pregnant
+on November 18 and 19; one carried four embryos (8 mm. in crown-rump
+length) and the other three (11 mm.).</p>
+
+<blockquote><p>External and cranial measurements of <i>P. m. goldmani</i> previously were
+known only for the holotype (Osgood, 1909:252, 267). Measurements of
+five adults, a male (75370) and four females (75365, 75369, 75371-72) are,
+respectively, as follows: total length, 204, 225, 215, 214, 210; length of tail,
+105, 120, 110, 108, 109; length of hind foot, 21, 23, 23, 22, 22; length of ear
+from notch, 21, 21, 21, 20, 21; weight in grams, 29, 19, 35 (pregnant), 33, 34
+(pregnant); greatest length of skull, 26.6, 26.5, 26.9, 26.5,&mdash;&mdash;; zygomatic
+breadth, 13.8, 13.9, 14.1, 13.4,&mdash;&mdash;; interorbital constriction, 3.9, 3.8, 4.0,
+4.0,&mdash;&mdash;; mastoid breadth, 11.8, 11.9, 11.8, 11.9, 11.5; length of nasals, 10.1,
+9.4, 10.0, 10.0,&mdash;&mdash;; length of maxillary tooth-row, 4.5, 4.3, 4.1, 4.1, 4.1.</p></blockquote>
+
+<p><i><b>Onychomys torridus yakiensis</b></i> Merriam.&mdash;Only one specimen of
+this grasshopper mouse has been reported previously from Sinaloa
+(from the town of Sinaloa by Hollister, 1914:471). Thirteen specimens
+in the Museum of Natural History better define the range of
+the species in the state as follows: 12 mi. N Culiacán (67981-82); 6
+mi. N, 1½ mi. E El Dorado (75374-80); 2½ mi. N El Fuerte (75373);
+1 mi. S Pericos (62118-20). The individuals from northeast of El
+Dorado extend the known range of the species some 115 miles south-southeast
+from Sinaloa.</p>
+
+<p>A female taken on November 17, 1957, from 6 mi. N, 1½ mi. E El
+Dorado carried two embryos that measured 23 mm. in crown-rump
+length. A female obtained on November 18 at the same place carried
+four embryos that measured 10 mm.</p>
+
+<p><i><b>Neotoma albigula melanura</b></i> Merriam.&mdash;Four specimens from
+northern Sinaloa, two (85379-80) from 3 mi. N, 1 mi. E San Miguel,
+350 ft., and two (75386-87) from 2½ mi. N El Fuerte, provide the
+first records of the species from the state. <i>N. a. melanura</i> has been
+known previously from adjacent parts of Sonora and Chihuahua
+(see Hall and Kelson, 1959:687-688). The specimens from northeast
+of San Miguel were trapped in runways under cholla cactus,
+in which nests also were found, on a slope above a rocky arroyo.</p>
+
+<p><i><b>Spilogale pygmaea</b></i> Thomas.&mdash;Two pygmy spotted skunks from
+5 mi. NW Mazatlán (85898-99) are the fifth and sixth of the species
+to be reported (see Van Gelder, 1959:381) and the second and third
+taken in Sinaloa (the holotype of <i>pygmaea</i> was obtained at Rosario).
+One of our specimens, an adult male, was shot on the night
+of January 10, 1961, as it foraged near an old hollow tree in weedy-thorn
+bush habitat adjacent to the Pacific Ocean. The hollow tree
+contained the nest of a woodrat. The second, an adult female, was
+trapped nearby in a commercial rat trap baited with peanut butter
+and set near a burrow in a forested area having little undergrowth.</p>
+
+<blockquote><p>The two individuals here reported fit fairly well the description of color
+pattern given for the species by Van Gelder (<i>op. cit.</i>: 379), but are larger
+(considering sex), externally and cranially, than any of the four specimens reported
+previously. Measurements of the male and female are, respectively:
+total length, 291, 270; length of tail, 65, 58; length of hind foot, 38, 35; length
+of ear from notch, 25, 23; weight in grams, 247.0, 190.5; condylobasal length,
+46.0, 42.9; occipitonasal length, 45.0, 41.4; zygomatic breadth, 29.0, 27.3;
+mastoid breadth, 23.9, 22.5; interorbital constriction, 14.3, 13.6; postorbital
+constriction, 14.8, 14.1; palatilar length, 15.6, 14.6; postpalatal length, 23.2,
+22.4; cranial depth, 16.6, 15.2; length of maxillary tooth-row, 14.2, 13.4.
+Cranial measurements were taken in the manner described by Van Gelder
+(<i>op. cit.</i>: 236-237).</p></blockquote>
+
+<hr style="width: 45%;" />
+
+<h2>LITERATURE CITED</h2>
+
+<p><span class="smcap">Andersen, K.</span></p>
+
+<blockquote><p>1908. A monograph of the Chiropteran genera <i>Uroderma</i>, <i>Enchistenes</i>,
+and <i>Artibeus</i>. Proc. Zool. Soc. London, pp. 204-319, illustrated,
+September.</p></blockquote>
+
+<p><span class="smcap">Anderson, S</span>.</p>
+
+<blockquote><p>1956. Extension of known ranges of Mexican bats. Univ. Kansas Publ.,
+Mus. Nat. Hist., 9:347-351, August 15.</p>
+
+<p>1960. Neotropical bats from western México. Univ. Kansas Publ., Mus.
+Nat. Hist., 14:1-8, October 24.</p></blockquote>
+
+<p><span class="smcap">Bailey, V</span>.</p>
+
+<blockquote><p>1915. Revision of the pocket gophers of the genus Thomomys. N. Amer.
+Fauna, 39:1-126, 8 pls., 10 figs., November 15.</p></blockquote>
+
+<p><span class="smcap">Baker, R. H</span>., and <span class="smcap">A. A. Alcorn</span></p>
+
+<blockquote><p>1953. Shrews from Michoacán, México, found in barn owl pellets. Jour.
+Mamm., 34:116, February 9.</p></blockquote>
+
+<p><span class="smcap">Burt, W. H</span>.</p>
+
+<blockquote><p>1938. Faunal relationships and geographic distribution of mammals in
+Sonora, Mexico. Misc. Publ. Mus. Zool., Univ. Michigan, 39:1-77,
+26 maps, February 15.</p></blockquote>
+
+<p><span class="smcap">Burt, W. H</span>., and <span class="smcap">R. A. Stirton</span></p>
+
+<blockquote><p>1961. The mammals of El Salvador. Misc. Publ. Mus. Zool., Univ. Michigan,
+117:1-69, 1 fig., September 22.</p></blockquote>
+
+<p><span class="smcap">Commissaris, L. R.</span></p>
+
+<blockquote><p>1960. Morphological and ecological differentiation of <i>Peromyscus merriami</i>
+from southern Arizona. Journ. Mamm., 41:305-310, 2 figs.,
+August 15.</p></blockquote>
+
+<p><span class="smcap">Coues, E</span>.</p>
+
+<blockquote><p>1877. Precursory notes on American insectivorous mammals, with descriptions
+of new species. Bull. U. S. Geol. Surv. Territories, 3:631-653,
+May 15.</p></blockquote>
+
+<p><span class="smcap">Dalquest, W. W.</span></p>
+
+<blockquote><p>1953. Mexican bats of the genus Artibeus. Proc. Biol. Soc. Washington,
+66:61-65, August 10.</p></blockquote>
+
+<p><span class="smcap">Davis, W. B</span>.</p>
+
+<blockquote><p>1958. Review of the Mexican bats of the Artibeus "cinereus" complex.
+Proc. Biol. Soc. Washington, 71:163-166, 1 fig., December 31.</p></blockquote>
+
+<p><span class="smcap">Dobson, G. E</span>.</p>
+
+<blockquote><p>1890. A monograph of the Insectivora, systematic and anatomical. Part
+III (includes only plates XXIII-XXVIII), Gurney and Jackson,
+London, May.</p></blockquote>
+
+<p><span class="smcap">Goodwin, G. G</span>.</p>
+
+<blockquote><p>1960. The status of <i>Vespertilio auripendulus</i> Shaw, 1800, and <i>Molossus
+ater</i> Geoffroy, 1805. Amer. Mus. Novit, 1994:1-6, 1 fig., March 8.</p></blockquote>
+
+<p><span class="smcap">Hall, E. R</span>., and <span class="smcap">W. W. Dalquest</span></p>
+
+<blockquote><p>1950. Pipistrellus cinnamomeus Miller 1902 referred to the genus Myotis.
+Univ. Kansas Publ., Mus. Nat. Hist., 1:581-590, 5 figs., January 20.</p></blockquote>
+
+<p><span class="smcap">Hall, E. R</span>., and <span class="smcap">K. R. Kelson</span></p>
+
+<blockquote><p>1959. The mammals of North America. Ronald Press, New York, 2:viii+547-1083+79,
+illustrated, March 31.</p></blockquote>
+
+<p><span class="smcap">Hoffmeister, D. H</span>., and <span class="smcap">W. W. Goodpaster</span></p>
+
+<blockquote><p>1954. The mammals of the Huachuca Mountains, southeastern Arizona.
+Illinois Biol. Monog., 24:v+1-152, 27 figs., December 31.</p></blockquote>
+
+<p><span class="smcap">Hollister, N</span>.</p>
+
+<blockquote><p>1914. A systematic account of the grasshopper mice. Proc. U. S. Nat.
+Mus., 47:427-489, pl. 15, 3 figs., October 29.</p></blockquote>
+
+<p><span class="smcap">Hooper, E. T.</span></p>
+
+<blockquote><p>1961. Notes on mammals from western and southern Mexico. Jour.
+Mamm., 42:120-122, February 20.</p></blockquote>
+
+<p><span class="smcap">Koopman, K. F.</span></p>
+
+<blockquote><p>1961. A collection of bats from Sinaloa, with remarks on the limits of the
+Neotropical Region in northwestern Mexico. Jour. Mamm., 42:536-538,
+November 20.</p></blockquote>
+
+<p><span class="smcap">Merriam, C. H.</span></p>
+
+<blockquote><p>1895. Revision of the shrews of the American genera Blarina and Notiosorex.
+N. Amer. Fauna, 10:5-34, pls. 1-3, 2 figs., December 31.</p></blockquote>
+
+<p><span class="smcap">Miller, G. S., Jr</span>., and <span class="smcap">G. M. Allen</span></p>
+
+<blockquote><p>1928. The American bats of the genera Myotis and Pixonyx. Bull. U. S.
+Nat. Mus., 144:viii+1-218, 1 pl., 1 fig., 13 maps, May 25.</p></blockquote>
+
+<p><span class="smcap">Nelson E. W.</span></p>
+
+<blockquote><p>1909. The rabbits of North America. N. Amer. Fauna, 29:1-314, 13 pls.,
+19 figs., August 31.</p></blockquote>
+
+<p><span class="smcap">Osgood, W. H.</span></p>
+
+<blockquote><p>1909. Revision of the mice of the American genus Peromyscus. N. Amer.
+Fauna, 28:1-285, 8 pls., 12 figs., April 17.</p></blockquote>
+
+<p><span class="smcap">Poole, A. J</span>., and <span class="smcap">V. S. Schantz</span></p>
+
+<blockquote><p>1942. Catalog of the type specimens of mammals in the United States
+National Museum, including the Biological Surveys collection.
+Bull. U. S. Nat. Mus., 178:xiii+1-705, April 9.</p></blockquote>
+
+<p><span class="smcap">Russell, R. J.</span></p>
+
+<blockquote><p>1953. Description of a new armadillo (Dasypus novemcinctus) from
+Mexico with remarks on geographic variation of the species. Proc.
+Biol. Soc. Washington, 66:21-25, March 30.</p></blockquote>
+
+<p><span class="smcap">Twente, J. W.</span>, and <span class="smcap">R. H. Baker</span></p>
+
+<blockquote><p>1951. New records of mammals from Jalisco, Mexico, from barn owl
+pellets. Jour. Mamm., 32:120-121, February 15.</p></blockquote>
+
+<p><span class="smcap">Van Gelder, R. G.</span></p>
+
+<blockquote><p>1959. A taxonomic revision of the spotted skunks (genus <i>Spilogale</i>).
+Bull. Amer. Mus. Nat. Hist., 117:229-392, 47 figs., June 15.</p></blockquote>
+
+
+<p><i>Transmitted March 15, 1962</i>.</p>
+
+
+<p class="center">
+29-3000
+</p>
+
+<hr style="width: 45%;" />
+
+<h3>Transcriber's Notes</h3>
+
+<p>Corrected typo: semi-colon for comma in "postpalatal length, 23.2, 22.4;".</p>
+
+
+
+
+
+
+
+
+<pre>
+
+
+
+
+
+End of the Project Gutenberg EBook of Noteworthy Mammals from Sinaloa, Mexico, by
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