326 



APPENDIX. 



beneath, white. Crown of the head, cheeks, neck, and wliole 

 upper parts — the front of the ears and legs, externally — gray, 

 with a faint cream-colored wash. Hairs whitish, or silver-gray 

 at base, then brownish-white, then black, with a faint cream 

 tinge, and ultimately tipped with black ; interspersed with long, 

 silky hairs, some of which are wholly black. Chin, throat, whole 

 under surface, interior of legs, the whole of the tail, (with the 

 exception of a narrow, dark line on the top,) pure white to the 

 roots. Irides light hazel ; around the eyes white. The tips of 

 the back parts of the ears black ; the external two-thirds of the 

 hinder part of the ears white, running down the back part of the 

 neck, and there mingling with the color of the upper surface ; the 

 interior third of the outer portion of the ear, the same gray color 

 as the back, fringed on the edge with long hairs, which are red- 

 dish-fawn at the roots, and white at the tips. The interior of 

 the ear is very thinly scattered with beautiful, fine white hairs, 

 being moi'e thickly clothed towards the edge, where it is grizzled 

 black and yellowish, but the edge itself is fringed with pure 

 white, becoming yellowish towards the tip, and at the tip is black. 

 Whiskers nearly as long as the head, for the most part white, 

 black at the roots ; a few hairs are pure white, others wholly 

 black. 



Dimensions. 

 From nose to insertion of tail, . . 21 inches lines. 



" tail to end of hair, 



" " (vertebrffi,) about 

 Ears measured posteriorly, . 

 Length of head measured over the forehead, 4 



" from eye to nose, 



" from heel to longest nail, . . 5 " 6 '' 



The specimen fi-om which the above description and drawing 

 were taken, was a female, procured by Mr. Townsend on the 

 Walla-walla, one of the sources of the Columbia river." 



This species is common on the Rocky Mountains. I made 

 particular inq,uiries, both of the Indians and British traders, re- 

 garding the changes it undergoes at different seasons, and they 

 all assured me that it never was lighter colored. We first saw it 

 on the plains of Blackfoot river, west of the mountains, and 



