164 BULLETIN m, 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 flattisli 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 with 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. Pliyllops Peters, Monatsber. k. preuss. Akad. Wissensch., Berlin, p. 
356. 
1878. Phyllops Dobson, Catal. Chiropt. Brit. Mus., p. 527 (subgenus of 
Stenoderma) . 
Type- species.- — Phyllostoma albomaculatum Gundlach==dL renews 
falcatus Gray. 
Geographic distribution. — 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 
