May 11, 1914 
Vol. XXVII, pp. 75-76 
PROCEEDINGS 
OF Til K 
BIOLOGICAL SOCIETY OF WASHINGTON 
A NEW ILVr OF THE OENUS .MIMON FJiOM MEXICO. 
BY E. A. (;()L1):\IAN. 
Among some bats recently submitted to tlie biological Survey 
for identification by the authorities of the Kansas University 
Museum of Natural History, are specimens of an apparently 
unnamed species of Mlmon from Cozumel Island, INIexico. For 
the privilege of describing this species, the type of which has 
been generously donated to the Biological Survey, I am indebted 
to Charles D. Bunker, Assistant Curator of Birds and INIammals, 
Kansas University Museum of Natural History. 
Mimon cozumelse sp. nov. 
Type from Cozumel I;?laii(l, oil’ the ea.st coast of Yucatan, IMexico. 
No. 203,191, U. H. National IMuseum (Biological Survej^ Collection), 
collected by G. F. (tanmer. Skin and skull of adult. 
General characters. —Similar in general to Mimon hennelUi (Gray), but 
color paler, more rusty brown; skull decidedly broader. 
Color. —Type: General color of ipiper parts near sayal brown (Ridg- 
way, 1912), the pelage becoming paler basally; outer side of forearm 
clothed proximally with short fur of same color as back; under jiarts 
wood brown. 
Skull. —Broader and more massive throughout tlian that of M. benneitii, 
the braincase conspicuously liroader, zygomata more widely spreading, 
especially posteriorly, the sides le.ss nearly parallel; palate broader behind 
posterior molars ; dentition very similar, but individual teeth slightly 
larger. 
Measurements.—Type (dry skin): Length of forearm, 5cS; tibia, 22.3; 
foot, 14.9. Skull {type): Greatest length, 2b; zygomatic lireadth, 14.3; 
mastoid breadth, 9.8; breadth of palate behind posterior molars, 2.8; 
maxillary tooth row, 9.t). 
Remarks.— Mimon benneitii (Gray) ajipears in several check lists of 
North American mammals, including the latest, * although Alston t has 
* Miller, North Anier. Land .Mamin., Hull. 79, U. .S, Nat. Miis., 1912, p. :>7. 
t Biol. Cent.—Amer., Mamm., 1.S79. p. 42. 
1.5—Pkoc. Biol. Soc. Wash., Vol. XXVll, 1914. 
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