28. COLUBER 687 
young—forms a distinct line along the third and fourth 
rows of scales. All of these lines fade out on the tail. The 
head is spotted with yellow. The lower surfaces are yellow 
or yellowish white, marked with slate or black anteriorly 
and along the tips of the gastrosteges, and often more or 
less tinted, especially posteriorly, with delicate rose pink. 
Length to anus_______ 772 803 859 910 940 euAal 
Iengthwot tail 339 350 358 366+ 418 362 
Distribution—This species ranges from Texas, New 
Mexico and Colorado west to California, and north to 
Idaho. 
In Arizona, it has been secured at Fort Whipple and 
Prescott, Yavapai County; Oak Creek, Coconino County; 
and at Carr’s Ranch, Sierra Ancha, Gila County. 
In Utah, specimens have been collected at Ogden, 
Weber County; Fort Douglas, Salt Lake County; Provo, 
Utah County; Kanosh and Cove Fort Millard County, 
Bakers Canyon, Beaver County; near Rush Lake, Iron 
County; and Bluff City, San Juan County. 
In Idaho, it has been taken between Bliss and the Snake 
River, Gooding County, and at Boise, Ada County. 
In Nevada, this species has been taken in White Pine 
(Antelope Springs), Ormsby (Carson), Washoe (Pyramid 
Lake, Little High Rock Creek), Elko (Carlin), 
Humboldt (Quinn River Crossing at 4100 feet; Big 
Creek at 5000 feet, and Leonard Creek at 4700 feet, in the 
Pine Forest Mountains), and Nye (Pablo Creek at 6,200 
feet in the Totyabe Mountains), counties. 
In Oregon, it has been found on the Snake River. 
In California, it seems to be fairly common in Inyo 
County (Maturango Spring, Argus Range, Coso Valley, 
Coso Mountains, Panamint Mountains), and has been se- 
