10. ATALAPIIA. 267 



straight, outer margin straight below with a distinct triangular 

 lobule, sloping inwards to form the tip from a point slightly above 

 the middle of the inner margin. 



"Wings from the base of the toes ; toes slightly more than half the 

 length of the foot ; postcalcaneal lobe small, indistinct ; calcaneum 

 weak, termination indistinct ; the last caudal vertebra quite free. 



The fur is rather short ; the face in front of the eyes is nearly 

 naked, and the wing-membranes are covered only along the sides of 

 the body ; a triangular patch of hair extends from the back upon the 

 upper surface of the interfemoral. 



Above brown, with yeUowish-brown tips ; beneath similar, with 

 paler or ashy extremities. 



The upper incisors are acutely pointed, separated by a narrow 

 interval from the canines, directed forwards and slightly inwards. 

 Space between the canines, both in the upper and lower jaws, very 

 wide, much wider than in the Old- World Scotophili. Lower incisors 

 distinctly trifid and crowded. The canines develop no internal basal 

 cusp. Pirst lower premolar small, in the tooth-row, not crushed in 

 between the canine and second premolar, acutely pointed, about half 

 the vertical height, but not half the transverse diameter of the 

 second premolar. Posterior upper molar equal to half the second 

 molar. 



Length (of an adult 5 preserved in spirits), head and body 2", 

 tail l"-4, head 0"-65, ear 0"-55, tragus 0"-22, thumb 0"-3, forearm 

 1"--1, thii-d finger 2"-5, fifth fimger l"-75, tibia 0"-45, foot 0"-28. 



Hah. North America ; from New York to the Eocky Mountains, 

 and southwards to New Orleans and to the West-Indian Islands 

 (Cuba). 



a. ad. sk. No locality or donor. 



h. ad. 5 , al. Georgia, N. America. 



e. ad. sk. Central America. 



10. ATALAPHA. 



Atalapha, Rqfinesque, Pi-ecis des decouvertes et traraux somiologiques, 

 p. 12 (1814) ; Desm. Mamm. p. 146 (1820) ; Gervais, Hist. Nat. 

 Mammif. i. p. 214 (1854) ; Peters, MB. Akad. Bed. 1870, p. 907. 



Scotophiliis, Gray, Mag. Zool. 8f Bot. ii. p. 498(1838). 



Lasiurus, Gray, List Mammalia Brit. Mus. (1843) ; Tomes, P. Z. S. 

 1857, p. 34; Allen, Bats of N. Atnerica, p. 14 (1864). 



Muzzle obtuse, the broad extremity of the nose projects slightly 

 beyond the lower lip ; nostrils simple, opening sublaterally in front 

 by lunate apertures, and rather widely separated ; head scarcely 

 raised above the face-line ; ears generally broad and rhomboidal, the 

 outer side prolonged forwards and ending in a lobular projection 

 near the angle of the mouth ; tragus narrow at the base and much 

 expanded above, the upper half suddenly curved inwards so that its 

 general shape is that of a reversed L ; this peculiar shape of the 

 tragus is very characteristic of the genus. 



