DIADQPHIS. 115 



4. Diadopliis psilclicllus, B. & G. — Body above greenish brown, 

 the scales roinutely dotted with black. Beneath deep orange-red, with small 

 black spots irregularly scattered all over, from head to near the end of tail. 

 Occipital ring broad, margined anteriorly and posteriorly with a narrow 

 black line. Dorsal scales in 15 rows. 



Head small, body proportionally long and subcylindrical ; . tail 

 conical, and very much tapering. The vertical plate is subpentago- 

 nal, and still less tapering, and less acute than in the preceding 

 species. Superciliaries as in D. amahilis. Scales subelliptical, 

 elongated. Outer rows larger than the rest, which diminish towards 

 the dorsal line. The bright color of the abdomen extends to the two 

 external rows of scales, which are unicolor, the spots of the abdomen 

 scarcely passing beyond the scutellre, although a series of very small 

 spots may be followed along the upper edge of the 2d dorsal rows of 

 scales close to the color of the back. The upper labial and lower 

 jaw are yellowish white. 

 El Dorado Co., Cal. 203+1. 60. 15. 14f. 2|. Dr. C. C Boyle. 



C. No occipital ring. Eye above the 3c? and 4t7i labials. Dorsal 

 scales in 17 rows. 



5. Diadopllis regalis^ B. & 6. — Body above uniform greenish ash; 

 beneath light yellow, scattered all over with small black spots. No oc- 

 cipital ring. Dorsal scales in 17 rows. 



Head proportionally short and broad behind; head less depressed 

 than in the preceding species, though flattened above ; snout rounded. 

 Eyes very small. Vertical plate subpentagonal, tapering posteriorly. 

 Superciliaries narrower anteriorly. Body long and subcylindrical. 

 Scales proportionally large and elongated, in 17 rows ; those of the 

 outer row conspicuously broader. The upper and lower jaws and 

 inferior surface of head maculated with black, on a light ground. 

 Color of the abdomen extending to the outer row of scales, which are 

 dotted with black posteriorly. The black spots on the abdomen ex- 

 tend considerably beyond the anus. 



Sonora,Mex. 237+1.58.17. 22i 3i. Col. J. D. Graham. 



