new Bat from Peru. 571 



Tomopeas ravus } sp. nov. 



Type. — Adult male (skin and skull), no. 639, collection of 

 P. 0. Simons, Yayan, Cajamarca, Peru (alt. 1000 metres), 

 November 4, 1899. 



Characters. — Slightly larger than Rhogeessa tumid'i, H. 

 Allen (total length about 75 millim., forearm about 83) ; 

 ear broader, its anterior margin concave below tip, its posterior 

 margin convex to base of antitragus ; colour yellowish grey, 

 almost exactly like that of Pipistrellus hesperus from the 

 desert regions of the western United States, and more pallid 

 than in any known species of Rhogeessa ; skull slender, the 

 rostrum and brain-case depressed ; teeth much as in Rhoge- 

 essa tumida, but first and second upper molars with more 

 distinct hypocone. 



a. Tomojjeas ravus ; b. Rhogeessa tumida. 

 (Somewhat enlarged.) 



Muzzle and lips. — Muzzle produced in conformity with the 

 broad lips, its extremity 3*5 millim. in front of incisors. 

 Front of muzzle naked except for a sprinkling of fine short 

 hairs at middle on upper surface. Nostrils with rim of aper- 

 ture produced into a distinct though very short tube. The 

 rim is slightly more produced at upper outer edge of nostril, 

 forming there a distinct blunt point. Upper lips thin and 

 widely spreading, the outer surface irregularly wrinkled and 

 little swollen, the inner surface distinctly and finely trans- 

 verse-wrinkled. Edge of lip conspicuously fringed, the 

 hairs longest about midway between nostril and angle of 

 mouth, but the fringe continuous across lower surface of 

 muzzle. The lower lip is unusually tumid in front, but 

 otherwise it shows no peculiarities. 



Ears. — The ear is moderately long ; laid forward it extends 

 to nostril. The anterior margin arises simply and without 

 trace of lobe or " hem " about 1 millim. above inner canthus 

 of eye. It is at first abruptly convex, the convexity ex- 

 tending through lower three fourths, though less distinct 

 above middle. At termination of main convexity the outline 

 becomes abruptly concave. Beyond this it is straight to 



