﻿RHOGEESSA TUMIDA. 123 

 KEY TO SPECIES OF EHOGEESSA. 



Lateral maudibnlar incisor scarcely oue-tvrentieth as large as central 



incisors alleni (p. 128) 



Lateral niandibnlar incisor one-half to two-thirds as large as central 

 incisors. 



Ear laid for\yard, reaching about 6 mm. beyond tip of nose gracilis (p. 126) 



Ear laid forward, reaching about to tip of nose. 



Fnr grayish brown at base parrida (p. 125) 



Fur yellowish throughout. 



Forearm al)out 30 mm tumida (p. 123) 



Forearm about 2.5 mm minutiUa (^p. 125) 



EHOGEESSA TUMIDA H. Allen. 



1866. Bhogei'sm tumida H. Allen, Proc. Acad. Nat. Sci. Phila., p. 286. 

 1877. Vesperngo parvulus Dobson, Catal, Chiroptera Brit. Mus., p. 215. 



Type locality. — Mirador, Vera Gruz, Mexico. 



Geograijliic (listrihution. — Central America and sontliern Mexico. 



General cltaraeters. — Size small; leiigtli, 70 to 75; tail, 30 to 33; fore- 

 arm, 27.4 to 30. Galcar strong, distinct, slightl}^ longer than free border 

 of uropatagiiim, terminating in a small but evident lobule conspicuously 

 keeled on the posterior border. Free border of uropatagium naked. 

 Ears moderate, laid forward they reach about to tip of nose. Wings 

 from base of toes. Legs and feet short and strong, the feet when out- 

 stretched reaching to Avithin 5 mm. of tip of tail. Fur yellowish, the 

 hairs on the back with dusky tips. 



Ears. — The ears (PI. I, tig. 8) are moderately long, reaching, when 

 laid forward, about to tip of nose; the substance of the conch thick 

 and leathery. Anterior border strongly concave from base to a little 

 past middle, then straight to narrowly rounded-off tip. Posterior border 

 concave just below tip, then gently and evenly convex to base. N'o 

 indication of basal notch. 



Tragus directed slightly forward; the anterior edge nearly straight, 

 but slightly concave at base, and curved a little backward at tip. 

 Posterior edge faintly crenulate, concave below tip, then concave to 

 slightly developed basal lobe. Greatest width of tragus at about 

 middle of posterior border. 



Membranes. — The membranes, especially the uropatagium, are remark- 

 ably thick and leathery for so small a bat. Throughout they are wholly 

 naked except close to the hodv and along the veins on the interfemoral 

 membrane. Wings from base of toes. Uropatagium (PI. I, fig. 13) 

 attached at tip of terminal caudal vertebra. 



Feet. — The feet and legs (PI. I, fig. 13) are short and strongly built, 

 m this respect resembling A. Jiumeralis. The foot is scarcely one-halt' 

 as long as the tibia, and the toes are slightly longer than the sole. 

 The toes are not united by membrane at base. Galcar distinct and 

 strong, slightly longer than free border of uropatagium. Lobule at 



