VOL. XVIII, PP. 247-248 DECEMBER 9, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW BAT FROM MEXICO. 

 BY WALTER L. HAHN. 



A study of the bat genus Hemiderma, begun by the author 

 some time since, has been delayed in various ways, and it now 

 becomes necessary to publish a preliminary description of a new 

 species from Mexico. For the use of the specimens on which 

 this description is based the writer is indebted to Dr. C. Hart 

 Merriam, Chief of the Biological Survey. 



Hemiderma subrufum sp. nov. 



Type from Santa Ifigenia, Oaxaca, Mexico. No. 75,127, U. S. National 

 Museum, Biological Survey Collection, cT adult. July 29, 1895. E. W. 

 Nelson and E. A. Goldman. Original number 8235. 



General characters Size small (forearm under 40) ; fur with a decided 

 reddish tinge ; skull short and small with high strongly rounded brain- 

 case ; teeth small and toothrows strongly divergent posteriorly. 



Color. Ten skins from the type locality are uniformly of a dark reddish 

 brown color above. The individual hairs are banded as follows : A very 

 short (not over mm.) basal area whitish ; next a wider band of dark (near 

 the clove brown of Ridgway) which is followed by another and wider band 

 of buffish white; succeeding this is the somewhat narrower band of reddish 

 prout's br.own which gives to the animal its characteristic color ; hairs mi 

 nutely tipped with whitish. Underparts similar ; but the bands of color less 

 sharply marked off, the dark bands being reduced and the pale areas suf 

 fused, making the general color paler and duller. 



Fur and Membranes. The fur, as compared with other specimens of the 

 genus from Mexico, is short and sparse, and the membranes more brownish. 



53 PROC. BIOL. Soc. WASH., VOL. XVIII, 1905. (247) 



