2 
JOUKNAL OF MAMMALOGY 
the highest recorded altitude for it in the state (though Mrs. Grinnell 
records one from 8500 feet in the San Bernardino Mountains). A 
second individual was captured at Lone Pine at the foot of the moun- 
tain, a few days later. Both are males. 
In her Synopsis of the Bats of California, Mrs. Grinnell cites but a 
single specimen of typical yumanensis from that State, namely, one 
from Carroll Creek, Inyo County. In view of the implied distribu- 
tion of this form east of the desert divides, I at first was inclined to 
refer the above specimens to it, but thanks to the generous interest of 
Mr. A. Brazier Howell, of Covina, California, I have been able to com- 
pare them with typical yumanensis from near Potholes, a short dis- 
tance from Fort Yuma, Imperial County, the type locality. The skin from 
Mount Whitney is noticeably darker, with slightly darker membranes, 
thus inclining toward the race saturatus. There is a very notable 
difference, apparent in both skin and alcoholic, by which the two speci- 
mens from Inyo County are further distinguished, namely, the much 
larger thumbs with their longer, more curving claw. The thumb of 
typical yumanensis is nearly 1.5 to 2 mm. shorter, a difference very 
apparent on comparison. Although direct comparison with typical 
specimens of sociahilis has not been made, it is clear that our Mount 
Whitney and Lone Pine examples cannot be referred to yumanensis 
proper, and hence doubtless represent sociahilis, the subspecies inter- 
mediate in position between it and saturatus. 
Myotis albicinctus sp. nov. 
WHITE-EDGED BAT 
Type . — An adult male, skin (and skull, temporarily mislaid), 11747 Mus. 
Comp. ZooL, from 11,000 feet altitude at the upper limit of timber, Mount 
Whitney, California, July 14, 1915. 
Characters . — A bat of the size and proportions of M. lucifugus but very pallid, 
with conspicuous white border to the wing membranes, broadest between the 
fifth finger and tarsus. Skull like that of M. lucifugus but the two small anterior 
premolars of the upper jaw relatively larger, the first drawn decidedly within 
the posterior border of the canine, by which it is thus partly concealed in side 
view. 
Color . — The type is a very pale clear sandy above, nearest the *‘pale buff” of 
Ridgway’s 1912 Nomenclature of Colors, very slightly paler or grayer on the 
head; below clear and contrasting white, the gray bases of the hairs showing 
through on the throat. The basal portion of the fur of both surfaces is dark 
slaty, paler or grayish at the throat. 
The ears are blackish as is also the greater part of the wing membranes. The 
posterior edge of the wing from the tip of the longest (third) digit to the ankle 
