418 



EMBALLONUEIDJE. 



ineli from the extremity of the muzzle ; inner margins of the ears 

 united bj' their bases on the muzzle at a point nearer to the extre- 

 mity of the nose than to the anterior commissure of the eyelids ; 

 outer and inner margins of the conch regularly convex ; antitragus 

 separated by a deep and narrow emargination, commencing anteriorly 

 in a plane slightly above the angle of the mouth ; tragus small, 

 quadrate, superior margin straight, outer and inner margins concave, 

 no projecting lobule at the base of the outer margin ; keel of the 

 ear-conch as in M. perotis, terminating posteriorly and inferiorly in 

 a deep and thick flattened ridge, which is in the same perpendicular 

 line with, and almost touches, the antitragus. 



A small gular sac in male, rudimentary in female ; opening directed 

 downwards and slightly forwards. 



Wings from the ankles. 



Distribution of fur upon the wing-membranes as in M. perotis. 

 Above, light brown at the base of the hairs, then chestnut-brown, 

 the extreme tij)s greyish, so that the upper surface appears alto- 

 gether grey ; beneath similarly coloured, but much paler. 



Upper and lower incisors as in M. perotis ; the first upper pre- 

 molar scarcely elevated above the gum, in the centre of the space 

 between the canine and second premolar. 



Length (of an adult J ), head and body 3""1, tail 2"-15, tail free 

 from membrane 1", head l"-2, ear 0"-9, tragus 0"-12, forearm 2"-35, 

 thumb 0"-35 ; third finger — metacarp. 2"-35, 1st ph. 1", 2nd ph. 

 1"'2; fourth finger— metacarp. 2"-25, 1st ph. 0"-85, 2nd ph. 0"-3 ; 

 fifth finger— metacarp. 1"'2, 1st ph. 0"-75, 2nd ph. 0"-35 ; tibia 

 0"-8, foot 0"-5. 



Hah. Brazil (Mato Grosso) ; Surinam ; Jamaica ; Cuba. 



This is the Chestnut Mastiff Bat of Gosse*, by whom its habits 

 have been observed in Jamaica. He remarks : — " Soon after sunset 

 we hear the scrambling of little claws along the plaster (in the loft 

 above) graduallj^ tending towards the point where the hole under 



the eaves is situated I judge that they crawl along one after 



another in a straight line to the outlet, in parties The family 



assured me that, after the Mastiff Bats had emerged a few hours, 

 they invariably returned into the hole again ; and they several 

 times directed my attention to them when returning. They return 

 betweea 8 and 9 o'clock, and issue forth again before the morning 

 twilight. 



" When handled its impatience of confinement is manifested by a 

 continuous schreeching, not very loud, but excessively harsh and 

 shrill. The ears are commonly so pendent as completely to cover 

 the eyes ; but they are occasionally retracted so as to expose the 

 eyes, especially if the face be touched. There is a gland on the 

 throat with an orifice capable of admitting a small, straw ; it emits 

 a very rank odour. This orifice is manifest in the female no less 

 than in the male ; but I could not detect any odour from it in the 

 former, even though irritated by the insertion of the head of a 

 pin." 



* 'A Niitiiralist's Sojourn in Jamaica,' p. 159 (1851). 



