672 CHIROPTERA 
It has been suggested that remains from the Upper Eocene Phos- 
phorites of Central France may indicate the existence of the genus 
Taphozous at that early epoch. 
Family PHYLLOSTOMATIDA. 
Middle finger with three well-developed bony phalanges ; first 
phalanx of the middle finger short ; nostrils in the front part of the 
cutaneous nasal appendages, or opening by simple apertures at 
the extremity of the muzzle; chin with warts or erect cutaneous 
ridges ; premaxille well developed, united in front. 
The members of this family are readily distinguished by the 
third phalanx in the middle finger, associated either with distinct 
cutaneous nasal appendages, or with well-developed first upper 
incisors, or with both. Unlike the Rhinolophide, their eyes are 
generally large; and the tragus is well developed, maintaining 
almost the same form throughout the species, however much the 
other parts of the body may vary. The fur is of a dull colour, and 
the face and back“(in the Stenodermatine division especially) are often 
marked with white streaks, as in the Pteropodide, of which these 
Bats take the place in the western hemisphere. A few species, 
probably all those with the tail and interfemoral membrane well 
developed, feed principally on insects, while the greater number of 
the species of the ’ampirine and Glossophagine divisions appear to 
live on a mixed diet of insects and fruits; and the Desmodontine 
division, of which two species only are known, are true blood- 
suckers, and have their teeth and intestinal tract specially modified 
in accordance with their habits. The family is restricted to the 
tropical and subtropical parts of Central and South America. 
Subfamily Chilonyeteriinze.—Nostrils opening by simple aper- 
tures at the extremity of 
the muzzle in front, not 
margined by a distinct nose- 
leaf; chin with expanded 
leaf-like appendages. It 
includes two genera. 
Chilonycteris.1.—Dentition: 
i$, c4, p 2, m3; total 34. 
The crown of the head is 
moderately elevated above 
Via. 318.—Head of Mormops blainvillet. (Dobson % . i 
Cat. Chiropt. Brit. Mus.) > the facial line, and the basi- 
cranial axis is almost in the 
same plane as the facial. There are about half a dozen species. 
Mormops.2—The two species of this genus are distinguished 
1 Gray, Ann. Mag. Nat. Hist. vol. iv. p. 4 (1839). 
* Leach, Zrans. Linn. Soe, vol. xiii. p. 76 (1820-22).—Amended. 
