22 NORTH AMERICAN FAUNA. fNo.il. 



white; rest of under parts oehraceous or orange yellow, including the 

 forefeet, and reaching narrowly down the under side of hiud leg to 

 ankle, whence it may or may not extend in a narrow line along inner 

 side of foot to toes; under side of tail more or less suffused with golden 

 chestnut; anal region chestnut brown; in worn pelage the colors are 

 everywhere much paler. 



Cranial characters. Skull similar to that of P. arizonensis but with 

 postorbital processes broader at base and less peg like. 



Remarks. This handsome Aveasel replaces longicauda on the Cascade 

 and Siskiyou mountains of Oregon and Washington, reaching a short 

 distance into British Columbia. The only specimens examined have 

 come from Siskiyou, Oregon, and Chilli wack, British Columbia (the 

 latter, No. 3553, collection of E. A. and O. Bangs). 



Measurements. Average of 2 males from Siskiyou Mountains, Ore- 

 gon: Total length, 423; tail vertebrae, 164; hind foot, 48. 



PUTOBIUS ARIZONENSIS Mearns. Mountain Weasel. 



Putorius arlzoncnsls Mearns : Bull. American Museum Nat. Hist., Vol. Ill, No. 2, pp. 



234-235, May, 1891. 

 Putorius longicauda Merriam : Mammals of Idaho, N. Am. Fauna, No. 5, pp. 83-84, Aug. 



1891 (from mountains of Idaho). 



Type locality. San Francisco forest, Arizona (a few miles south of 

 Flagstaff). 



Oeoaraphic distribution. Broadly, the Sierra Nevada and Eocky 

 Mountain systems, reaching British 

 Columbia in the Kocky Mountain re- 

 gion, but not known north of the Sis- 

 kiyou Mountains in the Sierra-Cascade 

 system. 



General characters. Similar to Puto- 

 rius longicauda in color and markings, 



FIG. 12.-P. arizonensis rf ad, Boulder ^ ut n^h smaller in size. 



County, Colo. 



Color. Upper parts from occiput to 



black tip of tail, raw umber brown; head decidedly darker; end of tail 

 black; chin and upper lip all round white; rest of under parts includ- 

 ing upper surfaces of fore feet and inner half of hind feet and upper 

 surfaces of hind toes oehraceous or oehraceous yellow, varying in tint. 



Cranial characters. Skull similar to that of longicauda but decidedly 

 smaller and less triangular; narrower across inastoids and more bulg- 

 ing in parietals. 



Remarks. Putorius arizonensis is a mountain form of longicauda, 

 which it closely resembles except in size. The type specimen, collected 

 by Dr. Mearns on the pine plateau of Arizona a few miles south of 

 Flagstaff, is an immature female and is of unusually small size. A 

 male obtained by him near the same place is of the normal size, as is 

 another male in the Department collection from Springerville, Ariz., 



