260 University of California Publications in Zoology (Vou. 17 
haired, both dorsally and ventrally, on its proximal fourth. Toes 
sprinkled on their dorsal surfaces with stiff hairs from 2 to 3 milli- 
meters long. 
Color.—Miller (1897b, p. 57) gives the normal coloration of this 
bat as ‘‘dull sepia throughout, paler on the belly, the hairs everywhere 
dusky slate at base.’’ One specimen at hand from California has 
the hairs everywhere chaetura black at their bases. On the dorsal 
surface the distal portions of the hairs are drab, while on the ventral 
surface the distal portions are cartridge buff. On another skin from 
California the distal portions of the hairs upon the dorsal surface are 
avellaneous. 
Skull.—vVery large and strong for a Myotis (see table of measure- 
ments) ; sagittal crest unusually well defined (pl. 21, fig. 32). For 
comparisons with M. thysanodes and M. evotis, the only other species 
with skulls of similar length, see pages 294 and 298. 
Measurements.—Average and extreme measurements of the three 
specimens in the Museum of Vertebrate Zoology are as follows: total 
length, 96.6 (93.0-100.0) ; tail vertebrae, 40.6 (40.0—42.0) ; tibia, 15.6 
(15.0-16.0) ; foot, 10.0 (9.0-10.5) ; forearm, 40.4 (39.6-41.0) ; greatest 
length of cranium, 16.3 (16.0-16.6). 
MEASUREMENTS IN MILLIMETERS OF THREE EXAMPLES OF MYOTIS VELIFER 
(J. A, ALLEN), FROM NEEDLES, SAN BERNARDINO COUNTY, CALIFORNIA 
: “2 
Fy 5 crates oe 
= a B Ss Sie 
a= 2 E Ee : fs 6S 
M £¢ mo 5 =) y o R oe 
aa Sex ae ie aq im = pq 
7762 «of 100.0 42 15.0 10.5 40.8 10.3 8.1 
7763 og 93.0 40.0 16.0 9.0 41.0 10.0 8.1 
7764 Q 97.0 40.0 15.9 10.5 39.6 10.4 8.3 
Synonymy and History.—The cave bat was described by J. A. 
Allen (1890, pp. 177-178) under the name Vespertilio velifer, from 
three specimens and six additional skulls obtained at Santa Cruz del 
Valle, Guadalajara, Jalisco, Mexico. H. Allen (1894, p. 92) placed 
velifer as a subspecies of Vespertilio albescens of South America. 
Miller (1897), p. 59) thinks it best to retain the specific name velifer 
for the bat occurring in Mexico and the United States until the South 
American species has been definitely characterized. 
Distribution—The general range of this bat as given by Miller 
(1912, p. 54) is from Hidalgo, northern Michoacan, and the City of 
Mexico north to the southern border of the United States. In Cali- 
fornia it has been taken only at Needles, San Bernardino County, in 
the Lower Sonoran zone near the Colorado River. (See map, text- 
fig. N.) 
Natural History.—Bailey (1905, pp. 208-209) remarks that if 
this bat is habitually a ecave-dweller, the distribution of eaves probably 
accounts for its somewhat erratic range. 
