108 PIlOCEKblXGS OF THE ACADEMY OF [Juu., 



Crotalus pricei Van Denburg. 



Proc. Cal. Acad. Sci., 1895, 8oG ; Cope, Rep. Nat. Mus., 113t. 



This species is known from five small specimens in the museum 

 of the Leland Stanford University, California. 



From Mr. Van Denburg's description it appears to be charac- 

 terized by a rostral slightly higher than wide; enlarged ])lates on 

 the muz/le; one to three rows between supraoculars; one row 

 between suboculars and labials; and the presence of but nine 

 upper labials, the number in other species being 12-18; 21 rows 

 of scales; ventrals 153-159; subcaudals 21-27. Length to rattle 

 447 mm. (tail 41). 



Olive gray, thickly covered with small brown dots. Fifty-four 

 to sixty small brown blotches arranged in two series on the back, 

 somewhat alternating anteriorly, but forming cross-bands behind; 

 seven brown cross-bands on the tail; two or three rows of smaller 

 alternating brown spots on the sides; belly dark slate, ends of the 

 ventrals and outer row of scales whitish; a dark brown oblique 

 streak behind the eye; two small brown spots on the occiput; 

 throat yellow tinged with vinaceous. 



The peculiar characters of these specimens are'quite sufficient, as 

 far as they are now known, to entitle them to recognition. 



Hab. — Huachucha Mountains, Arizona. 



Crotalus mitchelli Cope. 



Proc. Acnd. Phila., 1^61, 293; C. mitcJieUii and C. pyrr1iusCo\)e, I. c., 

 694 ; C. rrdteheUi Bon]., I. c. III, 580; C. mitchellii Coy)&, Rep. Nat. 

 Mus., 1193 ; G. m. luUchelH and 0. m. pi/7')'/ius Ste]., I. c, 454, 456; 

 C mitc/ulUYan Den., I. c, 224. 



Differs from all others of the genus in having the rostral sepa- 

 rated from the anterior nasal by small granular scales; canthus not 

 sharp and without large plates; 6-7 scales between supraoculars; 

 3 rows between suboculars aud labials; preocular sometimes 

 divided; 23-25 rows of scales; ventrals 178-198; subcaudals 26. 



Length about 1,100 mm. 



Ordinary specimens are grayish yellow, with brown punctulations 

 on the back, which are collected into about forty transversely angu- 

 lar spots, which form cross-bands on the posterior fourth of the body; 

 tail light with distinct black half-rings; an indistinct brown stx-eak 

 behind the eye, with a light one in front of it. Occasional exam- 

 ples are more or less red of varying shades; upon such specimens 

 C. pyrrhus Cope was founded. 



Hab. — Arizona and southern California. 



