VESPERTILIO, 589 
Genl. Char. Ears narrow; membranes thin; size small; muzzle 
narrow. 
Color. Dark brown, darker than V. fuscus. 
Measurements. Total length, 103; tail vertebra, 44; forearm, 42; 
thumb, 6; longest finger, 77; tibia, 18; foot, 8; ear, 16.8; tragus, 7.6. 
Skull: occipito-nasal length, 16.5; zygomatic breadth, 11; length of 
mandible, 12.6; interorbital constriction, 4; width of braincase, 8. 
d.—peninsule (Vespertilio), Thomas, Ann. Mag. Nat. Hist., 7th 
Ser., 1898, p. 43. 
Lower CALirorniA BROWN Bat. 
Type locality. Sierra Laguna, Lower California, Mexico, 
Geogr. Distr. Lower California, Mexico, 
Genl. Char. Size small; color pale. 
Color. General hue pale brownish fawn, darkest posteriorly; base 
of hairs slaty black. 
Measurements. Total length, 95; tail vertebra, 34; ear, 14. 
Skull: basal length, 14.2; occipito-gnathic length (to front of pre- 
maxilla), 16.5; greatest breadth, 11.7; interorbital width, 6.3; front 
of canine to back of third upper molar, 6.2; intertemporal breadth, 
a,8, (Thomas, 1: ¢.) 
e.—bernardinus (Eptesicus), Rhoads, Proc. Acad. Nat. Scien. Phil., 
1901, p. 619. 
SAN BERNARDINO BAT. 
Type locality. San Bernardino Valley, near San Bernardino, San 
Bernardino County, California. 
Geogr. Distr. Southern California and San Pedro Martir Moun- 
tains, Lower California. 
Genl, Char. Size and cranial characters as in V. /uscus, 
Color. Above pale bistre; beneath brownish drab; hairs unicolor 
nearly to the roots; ear and wing membranes blackish. 
Measurements. Total length, 114; tail, 42; extent of wing, 304; 
foot, 11.5; ear, 17. Skull: occipito-nasal length, 15.5; total length, 
17.5; Hensel, 13.5; zygomatic width, 11.5; interorbital constriction, 
4; height of braincase at audital bulla, 6.2; width of braincase, 8; 
palatal length, 7; length of upper molar series, 5; length of mandible, 
13; height at coronoid process, 5; length of lower molar series, 6. 
f.—propinquus (Vesperugo), Peters, Monatsb. K. Preuss. Akad. 
Wiss. Berl., 1872, p. 262. 
ALLIED Brown Bat. 
Type locality. Santa Isabel, Guatemala, 
Geogr. Distr. Guatemala and Nicaragua, Central America. 
