29. SALVADORA 691 
Length to anus_..__..... 235 258 340 652 695 850 
Length of tail_..._-__ 63 60 98 215 189 290 
Distribution —The western form of the Patched-nosed 
Snake has been found in Utah, Nevada, Arizona, California, 
Sonora, and Lower California. 
In Utah, it has been taken in Cottonwood Canyon, and 
perhaps at Ogden (Yarrow), though Cope says that the 
latter locality needs confirmation. 
In Nevada, specimens have been secured at Las Vegas 
and in the valley of the Virgin River near St. Thomas and 
Bunkerville, Clark County, and at Sutcliffe, Pyramid Lake, 
Washoe County. 
In Arizona, it has been found at Mowry in the Pata- 
gonia Mountains, Fort Buchanan, Calabasas, and Nogales, 
Santa Cruz County; Fort Huachuca, and Carr and Ramsey 
canyons in the Huachuca Mountains, near Fairbank, and in 
Rucker Canyon in the Chiricahua Mountains, Cochise 
County; in the foothills of the Catalina Mountains, and 
about Tucson, Pima County; Fort Whipple, Yavapai 
County; thirty miles northwest of Phoenix, Maricopa 
County; ten miles below Cibola and near Yuma, Yuma 
County; and near White River Canyon, Mohave Village, 
and San Pedro River. 
In Sonora, it has been collected at Guaymas and Sierra 
Blanca, as well as on Tiburon Island, in the Gulf of Cali- 
fornia. 
In Lower California, it occurs in the northern part of 
the peninsula in the San Pedro Martir Mountains and at 
San Matias; in the central portion, near Comondu, Santa 
Rosalia and San Ignacio; and in the Cape Region at La Paz, 
Cape San Lucas, San José del Cabo, Santa Anita, Agua Cal- 
iente and Sierra San Lazaro. 
In California, this snake has been collected in Inyo 
