Revision ofi Co ^ * 25 



^ringly mixed with black hairs, especiall *<ne Vile of back ; under 

 Vails white ; no distinct collar (long hairs ,, ck als , noticeably tipped 

 wi ; th black) ; fore and hind legs and feet so; *o d'- ^ with faint buffy 

 suffusion on outer side of fore legs, and tinged \Vu st fulvous on outer 



side of hind legs; tail pale, under side white basal coming buff, and 



narrowly tipped with black. 



Cranial and dental characters. Skull and teeth similar to those of C. 

 latrans, but slightly smaller. The lower premolars and carnassial and 

 the upper carnassial and first molar are decidedly smaller and less swollen 

 than in lalram. 



Remarks. C. pallidus is a pale arid-land representative of latrans. It 

 inhabits the Great Plains from eastern Colorado northward into Canada, 

 and is common throughout Montana except in the mountains. On the 

 southern plains, from eastern Colorado southward, it is replaced by 

 another species. Specimens of both have been obtained at Ark ins, 

 Colorado. 



Measurements. Unfortunately we have no flesh measurements of the 

 type specimen, but the hind foot (dry) measures 77 millimeters. The 

 form averages a little smaller than C. latrans. 



Cranial measurements. ($ adult, Johnstown, Nebraska.) Basal length, 

 177; basilar length of Hensel, 173; zygomatic breadth, 100; palatal 

 length, 93; mastoid breadth, 63.5; length of crown of upper carnassial 

 tooth, 21. 



Canis lestes sp. nov. 



Type locality. Toyabe Mountains near Cloverdale, Nevada. No. Hit?, 

 tf adult, U. S. National Museum, Department of Agriculture collection. 

 Collected November 21, 1890, by Vernon Bailey. Original No. 2223. 



Geographic distribution. Transition and Upper Sonoran areas from the 

 Rocky Mountains west ward, and from the arid interior of British Columbia 

 (Aschroft, Shuswap) southward over Washington and Oregon, and the 

 mountains farther south to the plateau region of northern Arizona and 

 New Mexico, and thence southward along the continental divide to the 

 Mexican boundary. In California C. lestes inhabits the coast ranges about 

 San Luis Obispo and probably elsewhere, as well as the Sierra Nevada, 

 and in winter it wanders out over the deserts, invading the range of 

 C. estor. 



Characters. Size large (next to latrans) ; ears and tail large; coloration 

 almost as in latrans ; cranial characters as in pallidus, but skull and teeth 

 averaging somewhat larger. 



Color. Muzzle very pale cinnamon rufous ; top of head from a little in 

 front of eyes to ears grizzled graj^ and ochraceous ; crown, nape, and ears 

 fulvous, deepest on ears ; rest of upper parts grayish buffy mixed with 

 black hairs (general effect slightly paler than in latrans) ; underparts 

 whitish, more or less suffused with buffy across middle of belly; long 

 hairs of throat conspicuously tipped with black, forming a broad ' ruff' ; 

 fore and hind legs and feet buffy-ochraceous on outer side, whitish on 

 inner side and on upper surface of hind feet ; tail broadly tipped with 



