208 CALIFORNIA ACADEMY OF SCIENCES. 



fifth or sixth superior and fifth, sixth, or seventh inferior 

 largest, fourth and fifth or third and fourth superior 

 reaching eye, first pair of inferior meeting on median 

 line. Two pair of geneials, posterior equal to or little 

 or much longer than anterior. Scales on body in nine- 

 teen or twenty-one rows. Anal plate undivided. Gas- 

 trosteges varying in number from one hundred and 

 forty-four to one hundred and seventy-three. Urosteges 

 in two series of from fifty-seven to eighty-nine. Eye 

 moderate. 



The head is brown or olive above, never red. The 

 labials are yellow or olive. The chin and throat are 

 yellow or yellowish white. The belly is yellow or olive, 

 sometimes washed with brick red. The dorsal line is 

 never bluish. There are four distinct types of colora- 

 tion, each of which might be considered a distinct spe- 

 cies if compared with typical specimens of the others, 

 but all of which pass into one another almost impercep- 

 tibly when large series are examined. These types are: 

 (a) Similar to T. vagrans, the ground color being 

 brown with three light lines, a pair of dark nuchal 

 blotches, and numerous black or dark brown spots along 

 the sides. This style of coloration is seen in young 

 only, but many of the smallest specimens are unspotted. 



(b) Black above, with three yellow- 

 ish or grayish white lines, the lateral 

 lines sometimes blended with the 

 color of the belly. Baird's and Gi- 

 rard's type of E. elegans was of this 

 style. 



