710 13. COLUBRWM 



teen, or 18%; 1 1 12 in nine, or 9%; 13 14 in seven, or 

 7%; 11 11 in six, or 6%} 11 1 3 in three, or 3 %; 10 10 

 in three, or 3 % ; 14 14 in one, or 1 % ; and 1 1 1 in one, 

 or 1 %. The scale-rows are 31 in sixty-nine, or 68%; 33 in 

 twenty, or 20%; and 29 in twelve, or 12%; the average is 

 31.1 rows. The gastrosteges vary in number from 200 to 

 230, males having from 207 to 230, females from 200 to 

 230; the average in 54 males is 217, in 46 females is 220. 

 The urosteges vary from 53 to 79, males having from 59 

 to 79, females from 53 to 78; the average in 53 males is 69, 

 in 45 females, 64. 



The dark blotches between head and anus in 75 speci- 

 mens vary from 56 to 93, the average being 70. On the 

 tail, in 83 specimens, they vary from 14 to 30, and average 

 21.4. 



Distribution. The Coast Gopher Snake occupies a 

 rather narrow strip of territory along the Pacific Coast of 

 the United States from British Columbia (Sumass) and 

 Puget Sound to Santa Barbara County, California. The 

 eastern limit of its range in the far north is not known, but 

 does not include eastern Washington, where other subspecies 

 occur. 



In Washington, gopher snakes taken at Puget Sound, 

 Fort Steilacoom, Wenass River, and at Meadow Creek in 

 Chelan County, probably belong to this subspecies, but have 

 not been recently examined. 



In southern Oregon, it occurs near Roseburg and in the 

 Camas Mountains, in Douglas County, but not near Kla- 

 math Falls, Klamath County, where it is replaced by P. 

 catenifer heermanni. 



In California, it occupies the coast ranges and valleys 

 east to the western edges of the Sacramento and San Joaquin 

 valleys, where it intergrades with and, farther east, is re- 



