I 93-] Allen, Mammals from Northeast Siberia. 143 



Type, No. 63226, U. S. Nat. Mus., $ ? juv., near Petropaulski, 

 southeastern Kamchatka; Dr. L. Stejneger. 



Allied to C. buxtoni from Gichiga, but very different in coloration, 

 and rather larger, with heavier dentition. 



General coloration above gray shaded with blackish, and varied 

 with small squarish white spots; sides gray with a faint tinge of pale 

 fulvous; ventral surface dingy gray; sides of shoulders, fore arms and 

 feet, and the whole pectoral region strong fulvous, palest on the breast 

 and brightest on the fore arm; thighs and hind feet fulvous gray; 

 chin, throat, and sides of the nose pale buffy white; top of the nose as 

 far as the eyes chestnut rufous ; top of head from middle of eyes pos- 

 teriorly blackish tinged with dark rufous; tail above basally mixed 

 blackish and gray, the apical third of the vertebral portion and the 

 tip black, the tips of the hairs pure white, forming a white fringe; tail 

 beneath fulvous gray centrally for the basal two thirds, the central 

 area bordered with black, the apical third all black fringed with 

 white. 



Measurements. There are no measurements, taken from the fresh 

 specimens, available. Approximate measurements from the skin are 

 as follows: Total length, 306 mm.; tail vertebrae, 75; tail to end of 

 hairs, no; hind foot, 55. Skull, total length, 53 mm.; zygomatic 

 breadth, 31; nasals, 20; upper toothrow, 13. 



A second specimen (U. S. Nat. Mus. No. 14136), also from 

 near Petropaulski, and collected by Dr. Stejneger, for whom 

 the species is named, a flat skin, lacking feet, tail, and skull, 

 is exactly similar to the one already described, so far as the 

 body is concerned. The type specimen is nearly full grown, 

 as shown by the skull, in which the permanent premolars are 

 just coming into place, their crowns being visible beneath the 

 milk teeth, three of the four milk premolars being still retained. 



Compared with C. buxtoni of exactly corresponding age, C. 

 stejnegeri is characterized by the absence of any fulvous suffu- 

 sion of the back, and of the strong ochraceous tint of the 

 sides, limbs, and ventral surface. The tail has a very much 

 larger area of black, and is fringed with white instead of ful- 

 vous. As regards the skull, the dentition is heavier, and the 

 palatal floor much less curved downward posteriorly, it being 

 in C. stejnegeri nearly flat throughout and in C. buxtoni 

 strongly arched for the posterior third. 



Dr. Stejneger has kindly called my attention to the follow- 

 ing passage in Kittlitz's ' Denkwiirdigkeiten einr Reise,' etc. 



