REPTILES OP THE PACIFIC COAST. 



227 



indefinite, especially toward the sides. On the middle of 

 the back they are separated by light yellow or white. 

 This light edging may or may not be continued onto 

 the sides, where smaller indefinite dark blotches may 

 often be seen. The head is unicolor above. A faint 



light stripe crosses the side of the face from the pre- 

 ocular plates to the mouth. The scales behind and 

 above this light stripe are a little darker than the ground 

 color and sometimes are set off posteriorly by a light line 

 running down and back from the posterior corner of the 

 eye and striking the supralabials in front of the corner 

 of the mouth. The tail is ash-color, with from three to 



