Vou X] 



VAN DENBURGH— VARIATION IN GOPHER-SNAKES 



17 



teen males is 219, in twelve females, 224. The urosteges vary 

 from 55 to 74, males having from 61 to 74, females from 55 to 

 66 ; the average in fifteen males is 68, in eleven females is 60. 



The dark blotches between head and anus in twenty-eight 

 specimens vary from 48 to 70, the average being 57.6. On the 

 tail, in thirty-two specimens, they vary from 13 to 19, and 

 average 15. The counts of the blotches are shown below. 



Pituophis catenifer annectens (^aird & Girard) 

 San Diegan Gopher-Snake 

 (Plate 1, fig. 2) 



Diagnosis. — Gastrosteges average more than 225 ; urosteges 

 numerous, average 70 to 76 ; scale-rows most frequently 33 ; 

 preoculars usually two ; supralabials most frequently eight ; 

 dorsal blotches many, average on body 74, on tail 22.8; no red 

 in coloration. 



Type locality. — San Diego, California. 



Distribution. — This subspecies occupies the coast region of 

 southern California and northern Lower California, and has 

 been found on some of the islands off the coast. We have ex- 

 amined specimens from Santa Barbara (Santa Barbara), Ven- 

 tura (Pine Creek), Los Angeles (Charter Oak, Cold Water 

 Canyon, La Crescenta, Pasadena, Mt. Wilson, Sierra Madre), 



