27. CHIRODERMA. 631 



tral longitudinal wart bounded laterally and inferiorly by seven 

 smaller warts ; inner margin of the lips with conical papillee as in 

 Artibeiis (Plate XXX. fig. 2). 



Thumb long and strong, first phalanx nearly three times as long 

 as the metacarpal bone ; first phalanx of the middle finger two 

 thirds the length of the second phalanx ; wings from the base of 

 the toes ; calcaneum shorter than the foot ; interfemoral deeply 

 emarginate behind, but nearly as much developed as in Artibeus 

 perspicillatus. 



On the inferior surface of the thorax, in the centre, slightly pos- 

 terior to a line drawn between the mammae, a peculiar teansverse 

 elevation exists, at the extremities of which a small projection 

 appears at each side like a teat, from the end of which long hairs 

 arise. This is probably a glandular organ (Plate XXX. fig. 2). 



Fur soot-brown ; a conspicuous white spot on each shoulder at 

 the origin of the antebrachial membrane. 



Upper incisors feeble, as in Stenoderma falcafum, forming a semi- 

 circular row, filling up by their bases the wide space between the 

 canines ; inner incisors moderately long, directed vertically down- 

 wards, conical and acutely pointed; outer incisors very short and 

 blunt, scarcely equaUing in vertical extent the cingulum of the 

 canines ; lower incisors very smaU, equal, with crowns deeply 

 grooved from before backwards ; first upper premolar short, equal 

 to half the canine in vertical extent ; second premolar as long as 

 the canine, and broader at the base ; lower premolars nearly equal 

 to the canine in vertical extent, the second slightly exceeding the 

 first ; molars as in Stenoderma rufum , but narrower. 



Length (of the type specimen, an adult $ ), head and body 1"'7, 

 head 0"-65, ear 0"-6, tragus 0"-2, forearm l"-3. thumb 0"-4 ; third 

 finger— metacarp. l"-2, 1st ph. 0"-45, 2nd ph. b"-7, 3rd ph. 0"-55 ; 

 fourth finger — metacarp. l"-05, 1st ph. 0"-5, 2nd ph. 0""6 ; fifth 

 finger— metacarp. 1"-1, 1st ph. 0"-45, 2nd ph. 0"-55; tibia 0"-65, 

 calcaneum 0"-22, foot 0"-4. 



Hah. Brazil. 



a. c? ad., al. Para. J. P. G. Smith, Esq. [P.]. 



27. CHIRODERMA. 

 Chiroderma, Peters, MB. Akad. Berl. 1860, p. 747. 



Like Vampyrops generally in external characters, but the muzzle 

 is shorter, the interfemoral membrane much more developed, and 

 the number and character of the teeth different. 



T^ ^■^. T 4 4 1—1 2—2 2—2 2—2 



Dentition. Inc. j or g, c. j^, pm. ^^, m. g^g or sug- 

 Upper middle incisors slender, with oblique cusps directed in- 

 wards and forwards ; the first upper premolar with a very oblique 

 cusp directed forwards ; second molar in both jaws larger than any 

 of the other teeth. 



Skull with a deep cleft between the nasal bones leading bacji- 



2m2 



