70 The American Naturalist. [January, 
sible that macrotis is a specimen of fuscipes with faintly clouded feet 
and bicolor tail. These considerations induce me to run the risk of 
imposing a synonym. Two specimens, one from Banning, another 
from San Bernardino, Cal., seem to represent a pallid race of interme- 
dius, differing from the Dulzura Mountain form in the ashy cast of 
upper parts and the absence of fulvous on the sides and belly, the hairs | 
of chin, breast and ventral region being white to their bases. The 3 
skulls of these light colored specimens show their specific identity with 4 
intermedius. In the involved state of the case as it now stands, + 
would refer to this race provisionally as Neotoma intermedia gilva. 
Diropomys PARVus. Sp. nov. a. : 
(Type, No. 1213 ad. 9, Col. S. N. Rhoads, San Bernardino, Cali- 
| 
aS te 
Beery S 
ae 
fornia, June 12, 1892, Col. by R. B. Herron). 
Description.—Similar to D. merriami, but smaller-bodied, longer- — 
tailed and lacking the black on sides of nose and face. Above, buffy a 
gray, becoming purer buff on sides. Spot at base of ear, fringe ove : 
eye, sides of nose, (except base of whiskers), forepart of cheeks, fore- 
legs, inside of hind legs, feet, sides of tail, stripe across thighs and | 
under parts white, strongly defined laterally against color of upper 1 
parts. Upper and lower fourth of crested penicillate tail, brownish- 
black, pencil sooty brown; plantar surface of hind feet brownish; — 
narrow ring around eyes, black. ‘= 
| 
Measurements—Total length 248; tail vertebrae 154; hind foot 355. 3 
ear (from skin) 10; pencil 25. Skull—Basilar length 21; mastoid — 
breadth 22.5; interorbital constriction 13; length of nasals 135 
crown length of upper molar series 3.6; width of foramen magnum 5 
tip of nasals to interparietal 28.4, to extremity of ante-orbital process — 
of maxillary 18.9; greatest ante-orbital width (molar) 20; length of 
mandible 13.9; height of coronoid process from angle 5.1. : 
Six specimens represent this species in my collection; three af — 
adult; all were taken in the San Bernardino Valley. The average — 
measurements of adults are somewhat less than those given above, — 
The type is more fulvous than any of the series. Spring specimens are — 
grayer (less fulyous) than type and the tail brush is sooty. ; 
No skull characters or measurements being given for merriami by 
Dr. Mearns, it is impossible to make cranial comparisons with that 
Compared with D. similis’ and D. simiolus’, D. parvus is readily de : 
tinguished by its darker, grayer colors. Its skull differs from either of 
the former in its shortness, greater relative width and size of brain 
i oe 
*Proc. Acad. N: Sci., Phila., Nov,, 1893. 
