164 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 



entoconid high and styliform; hypoconid obselete, represented by 

 a slight elevation in the ridge at edge of crown. Third lower molar 

 slightly larger than m 3 , its crown with two distinct styliform cusps 

 (probably the protoconid and metaconid) near anterior edge and a 

 cusp-like posterior elevation of cingulum. Skull essentially like 

 that of Artibeus in general appearance, but somewhat broader in 

 proportion to its length. Rostrum flattish above, the slightly arched 

 nasals forming a longitudinal median ridge which rises slightly 

 above level of thickened, rounded, supraorbital ridges. Near middle 

 each supraorbital ridge forms a distinct, slightly angular swelling at 

 point where it bends abruptly to pass obliquely across forehead to 

 join sagittal crest. Nares opening forward and slightly upward, 

 extending less than halfway from front of premaxillaries to anterior 

 termination of sagittal crest. Interpterygoid space continued for- 

 ward to level of first molar as a nearly parallel-sided palatal emargi- 

 nation. No appreciable space between incisive foramina and roots 

 of incisors. Postglenoid process unusually well developed, its height 

 noticeably greater than longitudinal width of glenoid surface. Exter- 

 nally as in Artibeus, but arching of second finger more conspicuous. 



Species examined. — The three at present recognized. 



Remarks. — Though externally so much like Artibeus that there are 

 apparently no characters by which they may be positively distin- 

 guished, the members of the small group of genera, of which Ardops 

 may be regarded as the best example, are at once recognizable by the 

 deep emargination of the palate and the great development of the 

 postglenoid process. It agrees Avith Phyllops and Ariteus and dif- 

 fers from Stenoderma in the unmodified form of the rostrum and the 

 close approximation of the incisive foramina to the roots of the 

 incisors, but is distinguishable from the first by the low, usually 

 bicuspid inner upper incisor, and narrow, parallel-sided palatal 

 emargination, from the second by the presence of a third upper molar, 

 and from both by the complete absence of the metaconid in the first 

 lower molar. 



Genus PHYLLOPS Peters. 



1865. Phyllops Peteks, Mouatsber. k. preuss. Akad. Wissensch., Berlin p 



356. 

 1878. Phyllops Dobson, Catal. Chiropt. Brit. Mus., p. 527 (subgenus of 



Stenoderma). 



Type-species.— Phyllostoma albomaculatum Gund\&ch.=Aretibeus 

 falcatus Gray. 



Geographic distrib ution. — Cuba. 



Number of forms.— -The type is the only species yet discovered. 



Character. — Like Ardops, but inner upper incisor with crown higher 

 than long, and without distinct secondary cusp, first and second upper 



