222 



DR. KNUD AXDERSEN ON BATS. 



[Apr. 7, 



Enchisthenes, Artiheus, and Uroderma. — Enchisthenes is much 

 more closely allied to Artibe^os than to Uroderma. In all the 

 characters which separate Uroderma from Artiheus, Enchisthenes 

 agrees with the latter gentis, the following points excepted : the 

 position and relative size of m^ and the relative size of va^ are as 

 in Uroderma ; as a conseqvience of the former fact, also the position 

 of cusp 5 of m^ is as in Uroderma. Enchisthenes differs from 

 Artibeics chiefly in the particulars referred to above, in the 

 diagnosis of the genus. 



Principal characters. — The skull has all the characters of an 

 Artiheus skull : short and broad, not long and subcylindrical as 

 in Uroderma ; profile, from front of sagittal crest to nasals, much 

 concave, as in Artiheus, not very slightly concave or almost straight, 

 as in Uroderma ; palate short, as in Artiheus, not long as in Uro- 

 derma ; plane of anterior nasal openings very oblique, as in 

 Artiheus, not looking chiefly forward, as in Uroderma. 



Cutting-edges of media7i upper incisors simple, pointed in the 

 centre, without any indication of a median notch (text-fig. 49 c) ; in 

 this respect Enchisthenes differs both from Artiheus (median upper 

 incisors bifid) and Uroderma (all upper incisors bifid). Outer 

 upper incisors somewhat narrower and much shoi"ter than median 



. Text-fig. 49. 



Enchisthenes hartl, S imm. Trinidad. Type, B.M. 92.9.7.8. 



A. Right upper, B. Left lower tooth-row ; C. Front view of upper incisors 

 and canines. X \. 



incisors; cutting-edge simple. p^ and p"* as in Artiheus and 

 Uroderma. Cusp 7 of m' well developed, but rather small, more 

 recalling the corresponding cusp in Uroderma than that of Artiheus. 

 Position of cusp 5 of m" as in U'oderma, not at (or very nearly at) 

 the middle of the hinder margin of the tooth, as in Artiheus-, cusp 7 

 of m^ so excessively small as to be scarcely observable without a 

 lens, forming only a very low postero- internal margin to the tooth. 

 m^ situated direct hehind m^, in position and shape quite as in 

 Uroderma, not rudimentary and situated postero -internally to m", 

 as in Artiheus (compare text-fig. 45 a with text-figs. 44 a and 46 A 

 on pp. 214 and 215). Cingulum on inner side of lower canines 



