27. CHIRODERMA. 535 



from Minas Geraea in the Collection, and are slightly larger than 

 those of the type specimen. 

 Hab. Brazil. 



a. ad. sk. Minas Geraes. 



h. skull of a. 



3. Chiroderma pusiUum. 



PhyUostoma pusillum, Wagner, Abhandl. Munch. Akad. v. p. 173 



(1843) ; Suppl. Schreh. SHugeth. v. p. 634 (1855). 

 Chiroderma pusillum, Peters, MB. Akad. Berl. 1866, p. 895. 



Much smaller than the preceding species, and with four very 

 distinct white streaks on the head. 



Wing-membrane from the base of the toes ; interfemoral mem- 

 brane very deeply concave behind. 



Upper middle incisors separated at their bases and directed 

 obliquely inwards, each tooth with a broader cusp than in either of 

 the preceding species, and on its outer side near its extremity a 

 blunt projection ; the other incisors as in Cli. villosum ; first upper 

 and lower premolars with broad bases, each with an oblique, 

 anteriorly directed, acutely pointed cusp ; last lower molar one half 

 greater than the first in antero-posterior diameter. 



The skull of the adult, as shown by Dr. Peters, has not the cleft 

 between the nasal bones which is present in all other species of the 

 genus. 



Length, head and body about 2", forearm 1"'4, thumb 0"-44; 

 third finger — metacarp. l"-25, 1st ph. 0"'52, 2nd ph. 0"-7, 3rd ph. 

 0"-5; fourth finger— metacarp. l"-23, 1st ph. 0"-48, 2nd ph. 0"-5; 

 fifth finger— metacarp. l"-24, 1st ph. 0"-33, 2nd ph. 0"-36 ; tibia 

 0"-5, foot 0"-4. 



The above measurements are taken from a specimen in the 

 Leyden Museum, referred to by Dr. Peters in MB. Akad. Berl. 1866, 

 p. 393. 



Hab. Brazil. 



4. CMroderma bidens. 



Ears as in Ch. pusillum ; nose-leaf rather narrow and long, the 

 lancet-shaped leaf with a very prominent central longitudinal ridge, 

 which is produced upwards and terminates the leaf in a narrow 

 needle-shaped projection ; horseshoe small, almost quite circular, 

 front margin distinct from the muzzle. 



Pirst phalanx of the middle finger one third the length of the 

 metacarpal bone, and slightly more than half the second phalanx ; 

 metacarpals of the last two fingers equal in length, slightly shorter 

 than the metacarpal of the middle finger. "Wings from the meta- 

 tarsi ; interfemoral membrane moderately deep behind, the emargi- 

 nation behind not extending further forwards than a line drawn 

 from the middle of one tibia to the other. 



Fur moderately long and dense ; on the upper surface dark brown, 



