666 CHIROPTERA 
deposits being an allied extinct genus. A number of European 
Miocene species have heen referred to Vespertilio, but the term in 
these cases must be used in a somewhat wide sense. Vespertiliavus, 
of the Phosphorites of Central France, differs oe Vespertilio in the 
proportions of its premolars. 
Section EMBALLONURINA. 
Tail perforating the interfemoral membrane and appearing on 
its upper surface, or produced considerably beyond the truncated 
membrane ; the middle pair of upper incisors generally large and 
close together. 
Family EMBALLONURID. 
First phalanx of the middle finger folded (in repose) on the 
dorsal surface of the metacarpal bone (except in Noctilio and 
Mystacops). Nostrils opening by simple circular or valvular aper- 
tures at the extremity of the muzzle, not surrounded or margined 
by foliaceous cutaneous appendages ; tragus distinct. 
The Emballonwride are generally easily distinguished by the 
peculiar form of the muzzle, which is obliquely truncated, the 
nostrils projecting more or less in front beyond the lower lip; by 
the first phalanx of the middle finger being folded in repose 
forwards on the upper surface of the metacarpal bone ; by the tail, 
which either perforates the interfemoral membrane or is produced 
far beyond it; and by the upper incisors, which are generally a 
single pair separated from the canine and also in the middle line. 
The family is cosmopolitan like the Vespertilionide, but rarely 
extends north or south of the thirtieth parallel of latitude. 
Subfamily Emballonurine.—Tail slender, perforating the inter- 
femoral membrane, and appearing upon its upper surface, or 
terminating in it; legs long, fibula very slender ; upper incisors 
weak. 
In the Furipterine division the tail terminates in the interfemoral 
membrane ; the crown of the head is greatly elevated above the 
face-line ; the thumb and first phalanx of the middle finger are very 
short ; and the dentition is 4 2, ¢ 4, p 2, m2; total 38. 
Represented by two genera, Furipterus } and Amorphochilus,? each 
including one species of peculiar aspect; the latter distinguished 
from the former by the widely separated nostrils and the great 
extension backwards of the bony palate. Habitat South America. 
In the typical or Emballonurine division part of the tail is 
included in the basal half of the interfemoral membrane, the remain- 
1 Bonaparte, Fawn. Ital. vol. i, (1832-41): Syn. Furia, F. Cuvier, Mém. du 
Muséum, vol. xvi. p. 150 (1828). Preoccupied by Linn. 1766. 
? Peters, Monatsber. Ak. Berlin, 1877, p. 185. 
