638 PROCEEDINGS OF THE ACADEMY OF [Oct. 



THEEE NEW AMESICAN BATS. 

 BY JAMES A. G. REH>*. 



Artibeus hercules n. sp. 



Tiipe. — Xo. o.7''^o. Collection of the Academy of Xatiirtil Science- 

 of Philadelphia. 



Eastern Peru. Collected by John Haiixwell. Presented by 

 E. D. Cope. 



General Characters. — Allied to JL. planirostris (Spix), but 

 differing in the larger size, the much larger tooi and in numerous 

 dental characters. 



Size. — This form is much larger than A. planirostris, its only 

 ally. The foot averages at least two and a half millimeters longer. 

 the forearm exhibits over five millimeters difference, and the tibia 

 and metacarptis of the third finger are also more extensive, the 

 former averaging three millimeters and the latter over six milli- 

 meters difference. 



Foot. — The foot is very slender, in fact no wider than in A. 

 planiro.?tris, though averaging over two millimeters longer. The 

 foot of planirostris is heavA- and broad, the basal portion being 

 the same length as in hercules, the difference in the latter being 

 wholly in the length of the toes. 



Color. — ^These specimens have been in alcohol for a number of 

 years, and as a result the exact color of the membranes and fur 

 cannot be ascertained They appear much darker than in plani- 

 rostris, but this is in all probability due to the preserving fluid. 



SL-ull — The single skull of A. hercules examined is that of a 

 paratype and lacks the cranial portion. The anterior section of 

 the skull is, as in accordance with the general charactei^, much 

 larger and heavier, the palate being comparatively wider. The 

 mandible has the coronoid process with a forward trend, which is 

 not noticed in A. planirostris. 



Teeth. — Second upper premolar subquadrate in basal outline, 

 quite different from the subpyriform tooth of A. planirostris, the 

 internal node well developed and forming a conspicuous cusp. 



