18/6.] MR. G. E. DOBSON ON THE MOLOSSI. / I [ 



— metacarp. 0"95, 1st ph. 0"-48, 2nd ph. 0"2 ; tibia 0"*55 ; foot 

 and claws 0""4. 



Hab. Tropical America and its islands ; apparently generally dis- 

 tributed. Found in Peru at an elevation of 9000 feet. 



Inc. 2; 2 }>n - &~2> ears close together or united ; tragus subacute 

 or quadrate. (Subgen. Promops, Gervais.) 



5. MOLOSSUS NASUTUS. 



Molossus nasutus, Spix, Simiar. et Vcspert. Brasil. p. 58, pi. xxxv. 

 fig. vii. (1823) ; Peters, Mori. Akad. Berl. 1865, p. 578, pi. fig. 4 

 (skull). 



Molossus fumurius, Spix, I. c. figs. v. and vi. 



Promons ursinus, Gervais (non Spix), Exped. de Castelnau, Zoo- 

 logie, p. 59, pi. xii. figs. 3, 3a (dentition) (1855). 



Ears much shorter than the head ; laid forwards, the inner margin 

 of the conch extends slightly further than halfway between the 

 eye and end of the muzzle ; inner margins less than one tenth of an 

 inch apart at their bases, uniting on the muzzle in a prominent 

 rounded ridge which ends abruptly at a short distance behind, and 

 above the nostrils ; inner and outer margins of the ear-conch con- 

 tinuous, forming almost an an arc of a circle ; ear-keel short, thick- 

 ened, but not expanded beneath, clothed posteriorly with short hairs; 

 antitragus circular with a narrow base, as in M. rufus, but thickened 

 and expanded above and posteriorly, so that its very convex superior 

 and posterior margin projects backwards considerably beyond its 

 base ; tragus very small, as in 31. rufus, with a minute projection at 

 the outer side of its base. Muzzle very obtuse in front, nearly ver- 

 tically truncated ; nostrils directed forwards and slightly outwards, 

 connected above by an ill-defined ridge which does not extend 

 downwards between them, the wide space between the nostrils and 

 the margin of the upper lip occupied by a quadrilateral patch of 

 thickly spread short hairs, the sides of the muzzle almost naked. A 

 large gular sac in J, as in M. rufus. 



Wings from the ankles ; interfemoral membrane deep, including 

 quite three fourths of the tail. 



Fur moderately long, but conspicuously longer than in M. rufus, 

 dark brown above, paler beneath, the base of the hairs whitish on 

 both surfaces. On the upper surface, a band of short fur com- 

 mences in a narrow line at the beginning of the middle third of the 

 forearm, increases in width outwards so as to cover the proximal 

 third of the fifth metacarpal bone and fourth of the fourth meta- 

 carpal, occupying also the portion of wing-membrane between ; 

 beneath, the wing-membrane between the humerus and femur is 

 thickly covered, and a band of fur, ""3 wide, extends outwards behind 

 the forearm to the fifth metacarpal bone and to the wing-membrane 

 beyond it, covering half the bone. 



First upper premolar very small, quite external to the tooth-row. 



Length (of an adult $ preserved in alcohol) : head and body 3 "• 1 ; 

 tail 2""1, tail free from membrane 0" - 7; head 0"'9; ear (>•(>, 



47* 



