68 



COrUBEIDiB. 



Pituophis melanoleucus, vara, oatenifer and vertebralis, Ja7i, Icon. 

 Gin. 22, pi. i. figs. 1 & 3 (1867). 



reticulatns, Bocourt, I. c. pi. xlvii. fig. 3. 



■ cateniler deserticola, Stejneger, I. e. 



Srout projecting ; rostral as broad as deep or slightly deeper, the 

 portion visible from above measuring one half its distance from the 

 frontal ; internasals much shorter than the prsefrontals, which are 

 usually broken up into four shields ; frontal once and one fourth to 

 once and a half as long as broad, as long as its distance from the 

 rostral or the end of the snout, as long as the parietals ; loreal 

 longer than deep ; one prseocular, usually with a subocular below it ; 

 two or three postoculars and one or two suboculars ; temporals 3 or 

 4 + 4 or 5; eight upper labials, fourth usually entering the eye; 

 four or five lower labials in contact with the anterior chin-shields, 

 which are longer than the posterior. Scales in 29 to 35 rows, 

 dorsals more or less strongly keeled. Yentrals 204-245'; anal 

 entire ; subcaudals 66-72. Yellowish or pale brown above ; a 

 dorsal series of large dark brown or black spots ; sides with small 

 dark spots ; young with a dark band across the forehead, from eye 

 to eye, an oblique streak behind and another below the eye ; lower 

 parts yellowish, uniform or with brown blotches. 



Total length 1140 millim. ; tail 190. 



United States west of the Eocky Mountains ; "Western Mexico. 



A. Fourth labial entering the eye. 



Monterey, California. J. H. Gurney, Esq. 

 Christiania Museum. 

 Smithsonian Instit. 



Christiania Museum. 

 Haslar Coll. 



San Francisco. 

 California. 

 California. 

 Great Salt Lake. 

 W. Mexico. 



a. $ (Sc. 31; V. 218 

 C. 66). 



b. Yg. (Sc.31; V. 204 

 C. 68). 



c. c? (Sc. 29; V. 212 

 C.70). 



d. cJ (Sc. 33; V. 218 

 C. 70). 



e. S (Sc. 31; V. 241 

 0. 70). 



/. c? (Sc. 29; V. 223 



0. 70). 

 g. Yg. (Sc. 29; V. 209 



0. 71). 



B. Eye separated from the labials by a series of suboculars. 



h. (S (Sc. 83 ; V. '219 ; San Diego, California. Christiania Museum. 

 C. ?). 



45. Coluber melanoleucus. 



Coluber melanoleucus, Bavd. Rept. vi. p. 409 (1803) ; Harl. Journ. 

 Ac. Philad. v. 1827, p. 359, and Med. Phys. Mes. p. 122 (1836). 



— ; — sayi, Schleg. Phys. Set-p. ii. p. 157 (1837). 



Pituophis melanoleucus, ^o/ir. N. Am. Herp. iv. p. 7, pi. i. (1842) ; 

 Baird 8r Gir. Cat. N. Am. Mept. p. 66 (1853) ; Bum. ^ Bibr vii' 

 p. 233 (1854) ; GUnth. Cat. p. 87 (1858) ; Baird, Sep. Explor. 



