HERPETOLOGY OF LOWER CALIFORNIA. Ill 



the back, with much larger scales on the posterior surface 

 of thigh, and never with two blue patches on throat. 



Type. — Cal. Acad. Sci. No. 1436, Sierra San Lazaro, 

 Lower California, Eisen and Vaslit, Sept., 1894. 



Description of the Type. — The head is considerably de- 

 pressed, with rounded snout. There are two scales on 

 the canthus rostralis. The nostrils are large, almost su- 

 perior, and nearer to the end of the snout than to the 

 orbit. The ear opening is very large, almost vertical, 

 and with a strong anterior denticulation of six pointed 

 scales. The head shields are smooth and somewhat con- 

 vex. The supraoculars are very broad. The super- 

 ciliaries are very long, narrow, and strongly imbricate. 

 There are two series of small, and one of large, sub- 

 labial plates, bordered below by the large, imbricate, 

 bicuspid gulars. There is a strong fold on each side of 

 the neck. The dorsal scales are slightly smaller than the 

 caudals, strongly keeled, very strongly mucronate, and 

 with serrate edges. The lateral scales are similar to, but 

 smaller than, the dorsals, arranged in oblique series, and 

 graduating into the dorsals and ventrals. The ventrals 

 are much smaller than the dorsals, smooth, and bi- or 

 tricuspid. The caudals are very strongly keeled and mu- 

 cronate. The posterior surface of the thigh is covered 

 with large, pointed, keeled scales. There are fifteen 

 femoral pores. Male, with enlarged postanal plates. 

 There are thirty-three dorsal scales between the inter- 

 parietal plate and the base -of the tail. 



The back and sides are olive brown, many of the 

 scales having central markings of deep blue or green. 

 A narrow line of verdigris green runs along each side 

 from the eye to the base of the tail. Below this, a nar- 

 rower similarly colored line runs from the ear to a point 

 a short distance above and behind the axilla. A patch in 

 front of the shoulder, the central part of the belly, and 



