4 
JOURNAL OF MAMMALOGY 
scribe the species without comparison of the skull, but the capture of a 
second example at Mammoth, Mono County, California, by Mr. A. 
Brazier Howell of Covina, California, has happily made this possible. 
Both Dr. and Mrs. Joseph Grinnell, who have seen these two skins, 
were inclined to refer them to M. lucifugus altipetens, though recog- 
nizing that they are quite different. Mr. Howell has very generously 
loaned me his specimen (taken on August 2, 1917) and it agrees in 
every essential with the type, showing the same pale buffy coloration 
above, pure white below, and conspicuous white border to the wing 
membrane. In the dry skin, the uropatagium is a trifle darker owing 
to its not being as completely spread. The beautifully prepared skull 
has made possible a description of the conspicuous difference in the 
upper premolars as compared with M. lucifugus altipetens, a speci- 
men of which, identified by Doctor and Mrs. Grinnell, the Museum 
has from Mount Tallac, California. In size and details of external 
structure this species very closely resembles M. lucifugus and M. 1. 
altipetens but in its coloration and in the relations of the first two 
upper premolars it is widely different and is unquestionably a wholly 
distinct species. As lately shown by Mrs. Grinnell, the race altipetens 
is clearly only a pallid subspecies of Myotis lucifugus, from which it 
chiefly differs in its tawnier coloration. The dark shoulder spot is a 
distinguishing mark of the species, but no trace of such a contrasting 
spot is found in M. alhicinctus. 
The pallid coloration of this bat may indicate that its main range 
is in the desert country chiefly east of the Sierras. 
Myotis longicrus interior Miller 
INTERIOR LONG-LEGGED BAT 
Two males were shot on different evenings (July 14 and 17) at our 
camp at 11,000 feet. One is much darker in coloration than the 
other, apparently an immature though full-sized individual. The 
other is a brighter tawny-olive than a specimen from Hot Springs 
Pass, Mono County, in the Museum collection, taken as representing 
typical longicrus. I have followed Mrs. Grinnell in referring both to 
the subspecies interior. In her Synopsis of the Bats of California, 
she records it from the ‘^arid Upper Sonoran, Transition, and lower 
Canadian zones’^ from Mono County southward. The present cap- 
ture extends the limits of range to a record altitude. Our first speci- 
men was shot shortly after sundown while it was flying about among 
