5 30 8. TFAID.^ 



behind parietals and interparietal. About five superior and 

 six inferior labials to a point below middle of eye. Subla- 

 bials large and, except first, separated from infralabials by 

 small granules and plates. Anterior gulars largest cen- 

 trally, becoming gradually smaller laterally and anteriorly, 

 and changing rather abruptly to smaller posterior gulars. 

 Scales on center of collar of moderate size, those on its edge 

 smaller. Small, smooth, convex granules on back. Eight 

 longitudinal rows of ventral plates. From three to six 

 large scutes, surrounded by smaller plates and granules, in 

 front of anus. Posterior surface of forearm covered with 

 small, nearly equal-sized granules. Tail very long and 

 provided with rings of large, obliquely keeled scales. 

 Femoral pores varying from 1 7 to 24. 



Ruthven has given the following description of the col- 

 oration of this lizard: "In the specimens from Tucson the 

 ground color above is dull reddish brown to blackish brown, 

 divided into longitudinal bands by four narrower and lighter 

 stripes which vary in color from light ash to dull orange 

 yellow. Between each pair of light stripes the ground color 

 is relieved by small rounded spots similar in color to the 

 stripes and arranged more or less irregularly in a single row. 

 On the sides below the stripes the pattern consists of rather 

 large and well defined white or light reddish gray spots on 

 the dark ground which is occasionally broken up into black 

 spots by the confluence of the light markings. On the 

 superior surface of the limbs the light spots are mostly 

 large and abundant enough to constrict the ground color to 

 recticulations. The pattern of the dorsal surface of the 

 body is occasionally continued onto the base of the tail but 

 only indistinctly. The usual color of the tail is dark green- 

 ish yellow or light brown, mottled with darker at the base, 

 and becoming uniformly reddish brown toward the tip. The 

 head is dull greenish yellow above in the paler specimens, 



