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University of Illinois Library M32 pees erent zt Pa bY: ie THE MAY 21 18 4h ZOOLOGICAL SERIES. > ines UNIVERSITY OF ILLINOIS OF FIELD MUSEUM OF NATURAL HISTORY Volume XX CHICAGO, May 15, 1935 No. 11 NEW MAMMALS FROM GUATEMALA AND HONDURAS By COLIN CAMPBELL SANBORN ASSISTANT CURATOR OF MAMMALS In a preliminary study of the collection of mammals made by the recent Leon Mandel Guatemala Expedition several new forms have been found which are described below. There is also included a description of the little-known mouse Scotinomys teguina, from topotypes taken by the expedition, and a new subspecies of it obtained by a former Museum expedition to Honduras. Micronycteris schmidtorum sp. nov. Type from Bobos, Izabal, Guatemala. No. 41559 Field Museum of Natural History. Adult male. Collected December 18, 1933, by F. J. W. Schmidt. Orig. No. 4070. Diagnosis.—Externally like M. minuta from Brazil but with longer calcar, band between ears higher in center, interfemoral less notched on posterior edge, and hair longer. Skull larger throughout, with longer tooth-row and especially larger lower premolars. Color.—Upper parts between Prout’s and Mummy Brown (Ridgway, 1912), the hairs with white bases. A topotype in some- what worn pelage is Snuff Brown above and a little more whitish below. Skull.—Larger and heavier than in minuta. Teeth larger, especially the lower premolars; ps about three-quarters the size of pz, and pz about equal to pz. Braincase more domed, with a low crest over the parietals. Zygomata heavier and more expanded. Measurements.—T ype, measured by collector (topotype in paren- theses): total length 64 (67); tail 17 (18); foot 10 (10); ear 16 (18); tragus 7 (7). Dried skin: forearm 35.3 (35.1); third metacarpal 30.3 (29); fourth metacarpal 30.3 (30.6); fifth metacarpal 30.7 (30.3); tibia 16.5 (16.3); calear 12.3 (12). Skull: greatest length 20.5 (20.6); condylo-basal length 18 (17.8); mastoid width 8.9 (9.2); zygomatic width 9.1 (9.4); interorbital width 4.3 (4.3); across No. 340 81 82 FIELD MUSEUM OF NATURAL HISTORY—ZOOLOGY, VOL. XX cingula of canines 3.5 (3.4); upper tooth-row 7.9 (7.8); mandible 13 (18.2); lower tooth-row 8.8 (8.3). Remarks.—This bat resembles minuta in color pattern but in the longer calcar approaches megalotis. The connecting band between the ears is in form about halfway between the two as it is notched more than in megalotis but not so much as in minuta. In the enlarged premolars schmidtorum differs from both of the other species. The type was taken in a hollow tree in December and four months later another male was captured in the same tree. A third specimen escaped. I take great pleasure in naming this species after the Schmidt brothers, Karl and Frank, who have, by active interest and encouragement on one side and by so perseveringly searching for specimens on the other, added so much to the knowledge of the bats of Guatemala. Ototylomys connectens sp. nov. Type from Coban, Alta Verapaz, Guatemala. No. 42044 Field Museum of Natural History. Adult male. Collected March 27, 1934, by F. J. W. Schmidt. Orig. No. 4308. Diagnosis.—In general like O. guatemalae but larger and with bicolored hairs on under side instead of hairs pure white to roots. Color.—General color above slightly lighter than Blackish Mouse Gray (Ridgway, 1912). Most hairs dark slate with brownish tips but some all black. Browner on sides. Under sides of forearms, chin, upper lip, a band across chest, and a few hairs at base of tail pure white to roots. Rest of under parts buffy white, grayer on throat, the hairs being slaty at the bases with buffy white tips. In the topotype the under parts are much more white than buffy. Hands and feet almost as in guatemalae, metapodials slaty brown but with only the inner side of the hind feet white, the outer side slaty brown. Digits white. Tail slightly paler below, with many black hairs. Skull—About as in guatemalae but slightly larger, with larger teeth and palatine foramina more rounded posteriorly. ; Measurements.—Type, measured by collector (female topotype in parentheses): total length 355 (370); tail 171 (191); hind foot 33 (32). Skull of type: greatest length 44.1 (43); condylo-basal length 39.7 (38.7); palatal length 20.4 (19.8); nasals 14.7 (14.7); interorbital width 7 (6.7); zygomatic width 21.4 (20.5); mastoid width 15.2 f>, —_— FL v.20’ 1935 NEw MAMMALS—SANBORN 83 (14.8); braincase above zygoma 16.2 (15.2); length of palatine foramina 9 (8.3); upper molar series 7.8 (7.1); width across m?—m?, 7.8 (7.4). Specimens examined.—The type and topotype from Coban, a ® pair from Chimoxan, and a female from Finca Chama, Alta Verapaz. Remarks.—Ototylomys connectens is a highland form while O. - guatemalae is a lowland form. That both have type localities in p Alta Verapaz and that, on the map, the two seem to occur but a a , few miles apart, is explained by the fact that Tucuru on the Polochic © River, the type locality of guatemalae, is in a deep lowland valley connecting with the lowland rain forest to the east while Coban, Chimoxan, Finca Chama, and Concepcion are from 1,500 to 2,000 feet above it on the highlands. Tucuru probably represents almost the limit of the inland range of guatemalae. A specimen was taken on the coast in Izabal. Ototylomys connectens is the only member of the genus with bicolored hairs on the under parts as all the other species have most of the hairs pure white to the roots. As guatemalae tends toward Tylomys in character, so connectens, in the bicolor of the under parts, goes a step further. I wish to thank Mr. H. E. Anthony of the American Museum of Natural History for the loan of the specimens from Chimoxan and Finca Chama. The other five specimens in the American Museum series, previously referred to guatemalae, undoubtedly also belong to this form. Scotinomys teguina teguina Alston. Mus teguina Gray, Proc. Zool. Soc. Lond., p. 79, 1848 (no description). Hesperomys teguina Alston, Proc. Zool. Soc. Lond., p. 7 55, 1876—Coban, Alta Verapaz, Guatemala. Scotinomys teguina Thomas, Ann. Mag. Nat. Hist., (8), 11, p. 409, 1913. Color.—General color above a dark smoky brown, blacker on mid-dorsal line where admixture of black hairs is heaviest. In- dividual hairs slaty at bases with reddish brown tips. Lighter on sides. General color of under parts buffy gray in two specimens and much darker in one with worn pelage. Individual hairs slaty with buffy tips. Hands, feet, tail, and ears dusky. Measurements.—Total length 131-138; tail 52-58; hind foot 18- 19. Skull: greatest length 22.7-23.3; condylo-basal length 20.3-21.3; palatal length 10.7-11; length of nasals 7.5-7.8; interorbital width 84 FIELD MUSEUM OF NATURAL HISTORY—ZOOLOGY, VOL. XX 4.3-4.7; zygomatic width 12.4; mastoid width 10.1; width of brain- case 10.7; upper molar series 44.1; lower molar series 4.1; width across m?—m?, 4.7-5.2. Scotinomys teguina rufoniger subsp. nov. Type from mountains west of San Pedro, northwestern Honduras. Altitude 4,500 feet. No. 22387 Field Museum of Natural History. Old female. Collected April 1, 1923, by Karl P. Schmidt and Leon L. Walters. Orig. No. 51. Diagnosis.—About the size of S. t. legutitts, but much darker and richer in color throughout, with a flatter skull. Color —General color above a dark smoky brown with a strong reddish cast. Individual hairs slaty at bases with very dark reddish brown tips. General color below reddish brown, the hairs being slaty at bases with reddish brown tips. Hands, feet, tail, and ears dusky. Skull.—As in teguina but, when viewed from side, dorsal outline much fiatter and less arched. Measurements.—Type (topotype in parentheses): total length 132 (1385); tail 56 (58); hind foot 17 (19). Skull: greatest length 23.1 (22.7); condylo-basal length 21 (20.3); palatal length 11.2 (10.6); length of nasals 7.7 (7.5); interorbital width 4.3 (4.4); zygo- matic width 11.5; mastoid width 10.3 (10.4); width of braincase 10.2 (10.7); upper molar series 3.9 (4); lower molar series 4 (4); across m*—m?, 5 (4.9). : Range.—Known only from San Pedro, but probably occurs throughout the Sierra de Merendon on the Honduras-Guatemala border. Specimens examined.—Type and three topotypes, two without skulls. Compared with three topotypes of teguina taken at same time of year. Remarks.—The dark color of rufoniger will separate it from all other Scotiénomys now known. Karl P. Schmidt states that the ‘San Pedro region is much more humid than Coban and is entirely a region of hardwood, while the limestone formation at Coban permits the growth of pine on the higher ridges. Neotoma ferruginea vulcani subsp. nov. Type from Volcan Tajumulco, south slope, San Marcos, Guate- mala. Altitude 13,200 feet. No. 41746 Field Museum of Natural History. Adult female. Collected February 22, 1934, by F. J. W. Schmidt. Orig. No. 4251. a ra 1935 NEW MAMMALS—SANBORN ~ 85 Diagnosis.—Closely related to chamula from Chiapas, Mexico, but darker on dorsal surface, more richly colored on sides, and buffy instead of white on under parts. Color.—Top of head and center line of back ferruginous heavily mixed with black, darkest on head. This brightens to a dark Ochraceous Buff (Ridgway, 1912) on sides where there are but few black hairs. Under parts light Ochraceous Buff changing to two spots of Dark Ochraceous Buff on pectoral region. Fur every- where plumbeous at base except for a very few pure white hairs on throat. Feet and tail as in chamula. Skull.—About as in chamula but with a slightly wider zygomatic plate. Measurements.—Type, measured by collector (topotype in paren- theses): total length 367 (360); tail 176 (176); hind foot 36 (84). Skull: greatest-length 45.2 (44.7); condylo-basal length 41.7 (42.1); palatal length 22.4 (28.5); interorbital width 5.5 (5.5); zygomatic width 23.3 (23.6); mastoid width 17.1 (16.7); braincase 18 (17.3); nasals 18.9 (16.8); diastema 12 (12.5); palatine foramina 9.2 (9.3); across m*=m#, 9 (8.4); width of zygomatic plate 4.4 (4.9); upper molar series 9.3 (9.3). Range.—Volcan Tajumulco and probably through the Sierra Madre Range to the north. Specimens examined.—Two from the type locality and the type of chamula from Chiapas. Remarks.— Neotoma f. ochracea from Jalisco and some specimens of N. f. picta from Guerrero and Oaxaca are the only other members - of this group known to have buffy under parts. This form is very close to chamula but seems to be well separated both geographically and by color differences. I wish to thank the United States Biological Survey for the loan of material from Mexico and Guatemala. UNIVERSITY ‘. rte URBANA 590.5F! FIELDIANA, 200L06Y$CHGO 20 193 Ti NUM)