^ Zoological Society. 



A. Wing-membrane extending to the distal end of tibia. 



a. Ears moderate, or rather small, rounded ; tragus rather short, 



rounded at the apex ; heel-cartilage short. 

 a. 1 . Nostrils separated by a moderately- 

 wide space, and opening sublate- 

 rally , 1 . Vesp. tristis. 



a. 2. Nostrils with a narrow space be- 



tween them (a distinct notch, how- 

 ever, in that space), and opening 

 almost in front 2. Vesp.Eschscholtzii. 



b. Ears large and pointed ; tragus long, narrow and pointed ; 



heel- cartilage long. 



b. 1. Hind-foot very large 3. Vesp. macrotarsus. 



b. 2. Hind-foot small 4. Vesp.pellucidus. 



B. Wing- membrane extending to base of toes. 



a. Ears short, rounded at apex ; tragus 



short, subpointed 5. Vesp. Meyeni. 



b. Ears large, pointed ; tragus long, at- 



tenuated and pointed ........ 6. Vesp. rufo-pictus. 



Vespertilio tristis. Vesp. vellere molli, nigricanii-fuliginoso ; 

 auribus mediocribus, rotundatis ; tragis mediocribus arcuatis, apice 

 rotundatis ; rostra brevi obtuso ; alls angustis. 



unc. lin. 

 Longitudo ab apice rostri ad caudse basin. ... 2 5 



— caud(B ,,.... 2 5 



antibrachii 2 I 



au9'is 8§ 



Alarum amplitude 13 



The fur is dense in this species, but not long ; dense fur extends 

 on to the head, and leaves but a small portion of the muzzle, which 

 is covered with shorter hair : the general colour is sooty black, and 

 the hairs appear to be uniform to the root ; those on the belly are 

 slightly tinted with greyish at the point. The incisor teeth are 



-g-, The forehead is much arched ; the muzzle short and obtusely 

 rounded, very broad and hairy ; the lower lip has a narrow transr 

 verse naked area at the tip ; the nostrils are sublateral, moderately 

 separated, and there is a slight depression between them. The 

 ears are moderate, rounded, but with the upper, or anterior, margin 

 nearly straight; the tragus is curved, and rather obtusely rounded 

 at the point, about 2| lines in length, and 1| line in width. The 

 wings are rather narrow, and have the membranes black ; they ex- 

 tend to the heel of the hindrfoot, which has the metatarsus narrow 

 and lopg, the distance from the heel to the base of the toes exceeding 

 the toes in length ; the toes are ghortish and equal, the naiU are also 

 short and but little curved ; the heel -cartilage is short, bent back, 

 and not easily brought in a. right angle with the tibia, as in many of 

 the species of the present genus. The hind-legs ar^ reither long ; 



