THE FAMILIES AND GENEEA OF BATS. 
141 
Remarks. — Though not very well characterized this genus is dis- 
tinguishable from Anoura by the rudimentary though evident tail, 
the nearly terete outer upper incisors, and the position of the anterior 
upper premolars (pm 2 ) close to base of canine. The zygomatic 
arch though very slender is apparently always present and com- 
pletely ossified. 
The status of Lonclioglossa wiedi as a member of this genus seems 
open to much doubt. I have seen no authentic specimens, but the 
characters given by Peters and Dobson make it appear more prob- 
ably an Anura , if, indeed, it is specifically separable from A. 
geoffroyi. 
Genus CHCERON YCTERIS Tsehudi. 
1844. Clioeronycteris Tschudi, Weigmann’s Arcbiv. filr Naturgeschichte, 
1844, I, p. 247. (Aomen nudum.) 
1844-46. Clioeronycteris Tschudi, Fauna Peruana. Mamm., p. 70 (subgenus 
of Glossophaga ) . 
1868. Clioeronycteris Peters, Monatsber. k. preuss. Akad. Wissensck., Berlin, 
p. 366 (genus). 
1878. Clioeronycteris Dobson, Catal. Chiropt. Brit. Mus., p. 509. 
1898. Choernycteris (sic) H. Allen, Trans. Amer. Philos. Soc., n. s., XIX, p. 
252. 
Type-species. — Clioeronycteris mexicana Tschudi. 
Geographic distribution. — Warmer parts of America north to 
southern Arizona. 
Number of forms. — Four species are now recognized. 
Characters. — Dental formula : 
- 2 3. 1. -- 3 4 5 6 7 .2-2 1-1 2-2 3-3 
. 1.-234567*0-0’ c 1-1’ pm 3-3 ’ m 3~3 -i50 ' 
Upper incisors minute, in pairs, the teeth of each pair in contact 
with each other but separated from canine by distinct space and in 
middle by an interval nearly twice as great. Crowns of incisors 
much longer than high and nearly as wide as long, that of the inner 
tooth flat and horizontal, that of the outer oblique and with a low, 
blunt cusp on inner side. Canines and premolars with no special 
peculiarities, the latter long and narrow, with high main cusp and 
well-developed styles. Upper molars distinctly spaced, with para- 
style and metastyle absent, and mesostyle greatly reduced, though 
indicated in all three teeth, the W pattern therefore barely suggested. 
The three molars are almost exactly alike in form, but the third is 
slightly smaller than either of the others. Lower molars with all 
the cusps present, but, with exception of protoconid, much reduced, 
the three teeth essentially alike. Skull with rostrum very greatly 
elongated in some species, in others not unusually so for members of 
the subfamily. Zygomata incomplete. Pterygoids strongly con- 
