142 CALIFORNIA ACADEMY OF SCIENCES. 



inferior labials to a point below middle of eye. Large 

 sublabial plates present. Gulars large centrally, becom- 

 ing smaller anteriorly and laterally, and changing ab- 

 ruptly to smaller granules posteriorly. Scales on fold or 

 collar usually large, largest being along its edge. Eight 

 longitudinal rows of ventral plates. Back and sides 

 covered with small, smooth, equal-sized granules. Limbs 

 plated in front and below. Rings of large scales, 

 strongly keeled except on the proximal part of its ventral 

 surface, covering tail. Ear-opening large, without den- 

 ticulation. About thirteen to sixteen pores in a series 

 along each thigh. 



The back is black or ))rown, darkest in young speci 

 mens, sometimes dotted with gray, with three longi- 

 tudinal light lines on each side. The lower two of these 

 lines are wider and lighter than the upper one. The 

 lowest line is continued along the side of the head and 

 thigh. Near its base the tail is banded like the back, 

 but it becomes unicolor toward the tip. It is bright 

 campanula blue in young specimens, but this color dis- 

 appears with age. The lower surfaces are yellowish 

 white, often tinted with gray or bluish slate on the belly, 

 more or less washed with bright reddish orange-chrome 

 in adult males. 



