1918] Grinnell: A Synopsis of the Bats of California 307 
Euderma maculatum, Miller (1907, pp. 226-267, 1 fig.). Description of 
genus. 
Euderma maculatum, J. Grinnell (1910, pp. 317-320, pl. 30). Second record 
from California. 
Euderma maculatum, Miller (1912, p. 67). Nominal. 
ELuderma maculatum, J. Grinnell (1913b, p. 281). Range in California. 
Diagnosis —Same as for the genus. 
Description: Head—Kars (pl. 16, fig. 9) very large, and in the 
dried skin at hand widely diverging at tips, fully three-fourths as 
long as forearm, and joined across forehead by a low band of mem- 
brane; ear convex on inner border, broadly rounded at tip, slightly 
concave on outer border just below tip, and convex on basal half of 
outer border, which continues as a low fold to a point below angle of 
mouth. Tragus well developed, 19 millimeters in length (in dried 
skin), this being more than one-third length of ear; posterior border 
convex above small basal lobe, tip broadly rounded, and anterior 
border straight on upper half, but slightly convex below. As sug- 
gested by Miller (1897b, p. 47) the tragus resembles in form the blade 
of a table knife. Nostrils prominent and situated at end of a narrow, 
low, naked dise, divided by a slight groove, and narrowing posteriorly 
to a point. 
Limbs and Membranes.—Forearm slightly bowed; thumb with a 
small basal pad. Wing short and stout, length of third metacarpal 
scarcely exceeding that of fifth. Wing and tail membranes wholly 
devoid of hair. About half of last caudal vertebra exserted. Feet 
moderately large, a little less than half as long as tibia. Toes very 
seantily haired. 
Pelage—F ur soft, silky, and about 8 millimeters in length, save 
for a small woolly patch at posterior base of each ear. 
Color.—The small woolly patches of fur at bases of ears are whitish 
throughout. Elsewhere on body all hairs are blackish either on the 
proximal third or for their entire length. On the dorsal surface 
of the animal are three equal-sized white patches of fur about 9 by 17 
millimeters in extent, one on each shoulder, and one on the rump 
(pl. 16, fig. 9). As suggested by J. Grinnell (1910, p. 318) these 
remind the observer of the ‘‘death’s-head’’ pattern of certain moths. 
The hair in these patches is, as elsewhere, blackish at base. On the 
ventral surface, the distal third of the hair is everywhere white, save 
for a narrow collar of blackish hairs continuous with blackish fur 
of back. In a dried skin which has been preserved for five years the 
ear membranes are yellowish, other membranes pale brown. 
Skull—As given for the genus. 
Measurements——The accompanying table of measurements has 
been compiled from published descriptions of specimens. 
Synonymy and History.—This bat was first described by J. A. 
Allen (1891a, pp. 195-198) from a single specimen found ‘‘ caught 
on a fence at Piru, in the western part of Ventura County, Califor- 
nia.’’ This specimen was secured by a Los Angeles taxidermist, 
Thomas Shooter, and through E. C. Thurber transmitted to the 
