476 PHYLIi08TOMIDJ3. 



I. 



Length, head and body S'O 



tail ' 0-5 



head 



ear 10 



tragus 0-4 



nose-leaf 0'35 



forearm 21 



third finger, metacarpal 1-7 



,, 1st phalanx 075 



„ 2nd , 0-85 



3rd , 0-65 



fourth finger, metacarpal 1-65 



„ 1st phalanx 055 



2nd „ 0-7 



fifth finger, metacarpal 1-75 



„ Ist phalanx 06 



2nd 0-65 



tibia 86 



calcaneum 0-65 



foot 0-6 



8. SCHIZOSTOMA. 



Phyllophora et Phyllostoma, Oray, Ann. ^- Mag. Nat. Hist. 1842, 



p. 257. 

 Mimon, Gray (in part), P. Z. S. 1847, p. 14. 

 Schizostonia, Gervais, Exped. du Cotnte de Castelnau, Zoologie, p. 49 



(1856) ; Peters, MB. Akad. Berl. 1865, p. 505. 

 Micronycteris, Gray, P. Z. S. 1866, p. 113. 



Muzzle and lower lip as in Vampyrus, but the nose -leaf is less 

 developed and its front margin is bound down to the underlying 

 integument ; ears large, widely apart, the bases of their inner sides 

 conjoined by a low band generally concealed by the fur, the outer 

 sides of the ear-conch more developed in front than in Vanipynis, 

 and terminating nearer the eye, forming in all the species a well- 

 defined lobe ; tail short, perforating the large interfemoral mem- 

 brane, and appearing upon its upper surface ; wings from the ankles 

 or tarsus, the first phalanx of the middle finger less than half the 

 metacarpal bone. 



Dentition. Inc. j, c. ^—^, pm. g^, m. ^^. 



The second lower premolar well developed. Skull long and narrow 

 in front, narrower at the extremities of the nasal bones than between 

 the temporal fosss (Plate XXVI. figs. 3, 3 a, skull of Sch. megalotis). 



Range. Mexican and Brazilian Subregions. 



This genus, though closely allied to Vamjpyrus, includes some of 

 the smallest-sized species of the whole group, none of those known 

 having a forearm more than 1""85 in length, thus contrasting 

 strongly with the species of that genus, which are the largest of the 

 whole family Phyllostomidse. Although resembling Vampyrus in 

 general external characters, the skull is comparatively much nar- 

 rower in front, the relative proportions of the lengths of the wing- 

 bones are different, the horizontal horseshoc-shapcd membrane, 



