FROM TEXAS AND MEXICO. 127 



total length thirty and three-fourths inches, tail nine and 

 three-fourths. The specimen has not the dark color of the 

 original description ; it has the same squamation and sim- 

 ilar disposition of lighter tints in place of the purple. 



Coluber testaceus Say, 1823. 



San Luis Potosi, Mexico. 



Dorsal rows seventeen ; ventrals one hundred and ninety ; 

 anal bifid; subcaudals ninety-eight pairs. On the Hanks 

 there is a considerable amount of reddish color. Anteri- 

 orly, on the body, each scale has a brown streak along its 

 centre; posteriorly, they arc yellowish in the middle and 

 have brown bodies. The general appearance is greyish or 

 yellowish grey. 



DlADOPIIIS DECORATUS Gllll'. / Cope. 



Mountains of Alvarez, Mex. 



Dorsal rows seventeen; ventrals one hundred and fifty- 

 seven; anal bifid; subcaudals one hundred and nine ; no 

 scale pores; total length nine and a half, tail three and 

 one-fourth inches. The top of the head is dark. From 

 the nostril through the eye and on the neck there is a white 

 band narrowly edged with black. The lower of the edg- 

 ings persists, as a narrow streak, extending to the end of 

 the tail. On the median row of the back there is another 

 slnik of black, which becomes more distinct behind the 

 neck in the lighter brownish of the body ; it also continues 

 to the extremity. The lips are white, and have a few small 

 spots of brown. The ventral scales along the entire body 

 have at each end a small spot of black, making live vit- 

 toe in all. It is likely that in larger specimens the median 

 vitta is lost in a darker ground. 



Diadopiiis texensis Kenn., 1860. 

 San Luis Potosi, Mex. 



KSSKX INST. BULLETIN, VOL. XIX 10* 



