660 TONATIA., MICRONYCTERIS, 
dorsal surface of second metatarsal; otherwise similar to 7. bidens 
Spix. 
Color. Above brown, base of hairs whitish; beneath paler brown. 
Measurements. Total length, 88.9; tail vertebre, 12.7; forearm, 
55.8; third finger, metacarpal, 41.9; fourth finger, metacarpal, 44.4; 
fifth finger, metacarpal, 46.4; tibia, 25.4; foot, 15.2; ear, 33; tragus, 
10.9. Skull: occipito-nasal length, 26.5; Hensel, 20; zygomatic width, 
17; interorbital constriction, 4; height of braincase, above bull, 11; 
width of braincase, rr; palatal length, 12; width of palate across 
last molars from outer edge, 9; length of upper molar series, 6; 
length of mandible, angle to outer edge of incisor, 17; length of 
lower molar series, 9.5. 
The species of the genus MicronycreEris are closely allied to Vam- 
pyrus, but contain among them some forms ef small size. They 
differ from the genus just named, beside other characters, in not 
having the horseshoe-shaped membrane free in front, and the wings 
are not attached to the backs of the feet, but either to the sides or to 
the extremity of the tibiz. 
145. Micronycteris. 
l=; c=; PS; M.; 2 = 34. 
ae iz a 
Micronycteris Gray, Proc. Zodl. Soc., 1866, p. 113. Flower & 
Lydekker, Mamm., Living and Extinct, 1891, p. 673. Type 
Phyllophora megalotis Gray. 
Schizostoma Gerv., Expéd. Casteln., Amer. Sud., Zoél., 1855, p. 49. 
(nec Bronn, Mollusca, 1835.) 
Vampyrella Reinh., Vidensk. Meddels. Naturh. Foren. Kjébenh. 
3 Aartis, IV, 2672, Op) TIT. 
Front margin of nose-leaf, which is small, fastened to the under- 
lying skin; ears bound on inner sides at their bases by a band hidden 
in the fur; the ears are large and placed far apart; ear conch termi- 
nating in a lobe; tail perforating interfemoral membrane, short; wing 
membrane from the ankles; forearms and legs hairy or naked. Skull: 
long, narrow; constriction greater at extremities of nasals than 
between the temporal fossa. 
KEY TO THE SPECIES AND SUBSPECIES. 
A. Wings from tarsus or metatarsus. PAGE 
a. Legs and Torearms Dairy, . sss ns we eee tes M. hirsutus 661 
b. Legs and forearms bare. 
A dk ote Se et te ea 
