10. PHrilODIiRMA. 483 



This genus, founded on a single species, approaches Phijlhstoma 

 very closely in general external form, but the very different shape of 

 the skuU (as first pointed out by Dr. Peters) and the dentition 

 at onee distinguish it. 



1. Phylloderma stenops. 



I'hylloderma stenops, Peters, MB. Akad. Berl. 1865, p. 613 ; 1866, 



p. 674. 

 Guandira cayanensis, Gray, P. Z. S. 1866, p. 114. 



Nearly as large as Phyllostoma hastatum, and very closely resem- 

 bling that species in general external form ; the ear-conch and tragus 

 are almost quite similar, the chin has also a V-shaped naked space 

 margined by warts, the wing-bones have very nearly the same rela- 

 tive proportions, and the fur agrees in quality and even in colour*. 

 The nose-leaf is, however, smaller and narrower, and its front margin 

 is bound down to the muzzle ; the head is abruptly narrowed in front 

 of the eyes, and the wing-membrane extends almost to the base of 

 the toes. 



Fur limited to the body and to the proximal half of the upper 

 surface of the humerus, short, dark brown above, pale greyish brown 

 at the base of the hairs ; beneath shorter, and pale brown with 

 greyish extremities throughout : membranes dark brown. 



Upper middle incisors with notched cutting-edges, the outer inci- 

 sors very short, filling up the space between the middle incisors and 

 the canines ; lower outer incisors equal to the middle pair in vertical 

 extent, but not half their diameter in cross section (Plate XXIV. 

 fig. 6) ; upper premolars as in Phyllostoma hastatum, but there are 

 three lower premolars, whereof the second is minute and stands in 

 the tooth-row. 



Length (of the type of Guandira cayanensis, Gray), head and body 

 about 3"-5, tail 0''-7, ear 0"-9, tragus 0"-35, forearm 2"- 75, thumb 

 0"-55 ; third finger— metacarp. 2"-45, 1st ph. 0"-85, 2nd ph. l"-2, 

 3rd ph. 0"-9 ; fourth finger— metacarp. 2"-3.5, 1st ph. 0"-6, 2nd ph. 

 0"-9 ; fifth finger— metacarp 2"-5, 1st ph. 0"-6, 2nd ph. 0"-65 ; tibia 

 1"-1, calcaneum 0"-55, foot 0"-6o. 



(The measurements of the type of Phylloderma steruips, Peters, are 

 slightly greater, so that it appears probable that the type of Guandira 

 cayanensis is not full-grown, although the bones of the wings seem 

 perfectly ossified.) 



Hah. Brazilian Subregion (Cayenne). 



a. cJ ? ad. sk. Cayenne. 



(Type of Guandira cayanensis, Gray.) 



* In the single male specimen in the Collection there appears to be a glau- 

 dular opening in the middle of the neck, as in PkyUostoma hastatum. 



2i2 



