154 CALIFORNIA ACADEMY OE^ SCIENCES. 



middle of one of these bands originates between the 

 eyes, while the others arise on the temples. All or none 

 of these bands may extend to or along the tail. The 

 lower surfaces are yellowish white, more or less spotted 

 or blotched with brown or gray. 



Length to anus 370 518* 695* 765* 860* 870* 



Length of tail 48 66 90 80 117 110 



Distribution. — This northern relative of the great boas 

 of tropical America has been found, in California, only 

 in San Diego (San Diego, Colorado Desert, Bonsall), 

 Riverside (San Jacinto), San Bernardino (Cucamonga 

 Caiion, San Gabriel Mts.), and Los Angeles (Mt. Wilson) 

 Counties. It lives also in Arizona and northern Lower 

 California. 



Genus 23. CHARINA. 



"Charina, Geay, Cat. Snakes Brit. Mus., 1849, p. 113 (type 

 bottae);" Wenona, B. & G., Proc. Ac. Nat. Sci. Phila., 1852, p. 

 176; " Pseudoeryx, Jan, Arch. f. Nat., 1862, p. 242" (type 

 bottae). 



The head is not, or is very slightly, distinct from the 

 neck and is provided with large plates. The nostril is 

 between two plates. The scales on the body are smooth, 

 small, imbricate, and about as long as wide. The uro- 

 steges and preanal plate are undivided. The tail is 

 short, very blunt, ending in a large, rounded plate. 



46. — Charina bottae (Blainville). Rubber Snake. 



Tortrix hottoi, Blainv., Nouv. Ann. Mus., IV, 1835, p. 289, pi. 



XXVI, fig. 1-lb (type locality California). 

 Charina bottce, Gray, Cat. Spec. Snakes Brit. Mus., 1849, p. 113; 



BocouRT, Miss. Sci. au Mex., 8e livr., 1882, p. 511; Stejneger, 



Proc. U. S. Nat. Mus., XIII, 1890, p. 181; Cope, Proc. U. S. 



Nat. Mus., XIV, 1891, p. 592. 



*Prom Stejneger, Proc. U. S. Xat. Mus., XIV. 1891, p. 515. 



