268 University of California Publications in Zoology  [Vov.17 
Myotis lucifugus longicrus, Merriam (1899, p. 89). Oceurrence on Mt. 
Shasta. 
Myotis lucifugus longicrus, Elliot (1901, pp. 402-403), part. Diagnosis; 
distribution. 
Myotis lucifugus longicrus, Stone (1904a, p. 579). Occurrence on Mt. 
Sanhedrin. 
Myotis lucifugus longicrus, Elliot (1904b, p. 581), part. Diagnosis; dis- 
tribution. 
Myotis lucifugus longicrus, Elliot (1905, p. 479), part. Geographic dis- 
tribution. + 
Myotis lucifugus longicrus, Stephens (1906, pp. 265-266), part. Diag- 
nosis; distribution. 
Myotis lucifugus longicrus, Seton (1909, p. 1149), part. Map showing 
general range. 
Myotis lucifugus longicrus, Miller (1912, p. 55), part. General range. 
Myotis lucifugus longicrus, J. Grinnell (1913b, p. 276), part. Range in 
California. 
Myotis longicrus, Miller (1914, pp. 211-212). Possible identity of M. 1. 
longicrus from interior of California with M. 1. interior. 
Diagnosis.—Total length, 91 to 100 millimeters; tibia long, 17.4 
to 18.9; ear from meatus, 12.0 to 13.5; tragus, 7.0 to 8.0; general color 
of back deep bister. 
Description: Head.—Kar short, reaching barely to tip of nose 
when laid forward, and bluntly rounded at tip. Tragus bluntly 
rounded at tip, and its greatest diameter about 1 millimeter above its 
basal notch. 
Limbs and Membranes.—Membranes not peculiar. Feet large and 
strong (7 to 8 millimeters long), but less than half tibia in length. 
Wing membrane attached at bases of toes. Calear keeled. 
Pelage-——F ur everywhere full and soft; length on middle of back 
averaging about 7 millimeters. Wing membranes naked save where 
body fur extends along line of attachment of wings to body. Dorsal 
surface of uropatagium scantily haired on its basal fourth; ventrally, 
short, scanty hairs occur over nearly its entire surface. Terminal 
joint of each toe scantily haired, both above and below. Ear scantily 
haired over entire anterior surface; posterior surface haired at base, 
the hairs extending farther outward along anterior margin than on 
posterior edge. 
Color—Hairs on back deep bister, with faintly hghter tippings. 
Hairs on ventral surface deep bister at bases, with tippmgs of 
vinaceous-buff, these light tippings being more conspicuous toward 
posterior portion of ventral surface. Ears and membranes dark clove 
brown. Individuals from the Sierra Nevada of Placer and Eldorado 
counties are faintly lighter than those from the humid coast belt, and 
thus vary in the direction of MW. 1. interior of the more arid southern 
and interior parts of the state. 
Skull.—Distinguished from that of any other small Myotis by its 
relatively short and sharply upturned rostrum and very high occipital 
elevation (pl. 22, fig. 40). Between skulls of the nearly related 
Myotis longicrus longicrus and M. l. interior I ean find no constant 
difference; but Miller (1914, p. 211) says of the latter race, ‘‘skull 
