114 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 
Number of forms . — Though two forms of Coeloms have been de- 
scribed ( C . frithii from Bengal and C. bernsteini from Java), only 
the type species is currently recognized. 
Characters . — Dental formula as in Hipposideros. Lower incisors 
not forming a continuous row between canines, the outer separated 
from canine by a space about equal to the width of its crown. Upper 
molars peculiar in the narrowness of the inner portion, the unusual 
development of the styles, and the great depth of the reentrant angles. 
The angles extend inward almost perpendicularly instead of with a 
noticeable forward slant. Last upper molar with a distinct, but 
short, fourth commissure. Skull as in Hipposideros except that nasal 
swelling is not as conspicuous. Tail rudimentary, less than 2 mm. in 
length. 
Species examined. — Coelops frithii Blyth. 
Genus CLCEOTIS Thomas. 
1901. Clceotis Thomas, Ann. and Mag. Nat. Plist., 7tli ser., VIII, p. 28, July 
1901. 
Type-species.- — Cloetis percivali Thomas. 
Geographic distribution . — British East Africa. 
Number of forms . — At present the type species only is known. 
Characters . — Dental formula as in Hipposideros, except for ab- 
sence of small upper premolar (pm 3 ). Teeth not peculiar in form, 
except that the third upper molar has the first V as large as in the 
other teeth and the commissure beyond the metacone indicating, as 
in Coelops , a rudimentary second V, is larger than in the related 
genera. This tooth is therefore more developed than in any other 
known bat. As in Coelops , which most nearly approaches it, the 
first V is distinctly smaller than in the other molars. Skull with an- 
terior portion distinctly less than half as long as brain case and with 
nasal swelling very inconspicuous. Zygoma slightly expanded at 
extreme posterior base. Ears very short, appearing as though 
squarely cut down to a collar-like rim. Tail well developed, longer 
than femur. 
Remarks . — This genus is strikingly characterized by the slight 
development of the rostrum and the short, squarely cropped ears. 
Species examined. — Clceotis percivali Thomas.. 
Genus RHINO NYCTERIS Gray. 
1847. RMnonicteris (sic) Gray, Proc. Zool. Soc. London, p. 16. 
1866. Rhino nycteris Gray, Proc. Zool. Soc. London, p. 81. 
1878. Rhinonycteris Dobson, Catal. Cliiropt. Brit. Mus., p. 126. 
Type-species. — Rhinolophus aurantius Gray. 
Geographic distribution. — Australia. 
Number of forms . — The type species is the only known form. 
