18 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



San Bernardino (Ontario), Riverside (Colton, San Bernar- 

 dino Mts., Riverside, San Jacinto, San Jacinto Mts.), and San 

 Diego (Warner Pass, Agua Caliente, Cahuilla Valley, Julian, 

 Cuyamaca Mts., Campo), counties, California, and from En- 

 senada, San Martin Island, and South Coronado Island, Lower 

 California. 



It is probably this subspecies of gopher-snake which has been 

 observed, but not captured, on Santa Catalina Island. Those 

 of Santa Cruz Island, however, are Pitiiophis catenifer 

 catenifer. 



Variation. — Sixty-nine specimens all have loreals 1-1. The 

 preoculars are 2-2 in forty-four, or 64% ; 1-1 in twenty, or 

 29% ; and 1-2 in five, or 7%. The postoculars are 3-3 in forty, 

 or 59% ; 4-4 in thirteen, or 19% ; 3-4 in eleven, or 16% ; and 

 2-3, 2-A, 4—5, and 5-5, each in one. The temporals are 4-4 in 

 twenty-three, or 34% ; 3-3 in fifteen, or 22% ; 3-4 in twelve, or 

 18% ; 4—5 in five, or 7% ; 5-5 in five, or 7% ; 3-5 in two, or 

 3% ; and 2-2, 2-3, 2—4, 4-6, and 5-6, each in one. The supra- 

 labials are 8-8 in thirty-three, or 48% ; 9-9 in nineteen, or 27% ; 

 and 8-9 in seventeen, or 25%. The infralabials are 13-13 in 

 thirty-four, or 49% ; 13-14 in ten, or 14%) : 12-12 in eight, or 

 12% ; 12-13 in seven, or 10% ; 14-14 in three, or 4% ; 11-13 

 in two, or 3%; and 10-11, 11-11, 11-12, 12-14, and 14-15, 

 each in one. The scale-rows are 33 in thirty-seven, or 54% ; 

 31 in twenty-five, or 36% ; 35 in six, or 9% ; and 29 in one, or 

 1% ; the average is 32.4 rows. The gastrosteges vary in num- 

 ber from 217 to 243, males having from 217 to243, females 

 from 218 to 240; the average in forty-three males is 228, in 

 twenty-five females, 231. The urosteges vary from 62 to 85, 

 males having from 62 to 85, females from 62 to 83; the aver- 

 age in thirty-nine males is 76, in twenty-four females, 70. 



The dark blotches between head and anus in seventy-one 

 specimens vary from 54 to 89, the average being 74. On the 

 tail in sixty-five specimens they vary from 14 to 29, and aver- 

 age 22.8. The counts of the blotches are shown in full below. 



