14^ BULLETIN 15 4, UNITED STATES NATIONAL MUSEUM 



antebrachials 2-3; brachials and antebrachials rather continuous at 

 a point of contact ; postantebrachium with a few enlarged granules ; 

 femorals 4—7; tibials 3-4; femoral pores 11-14; tail elongate, taper- 

 ing; caudal plates large, oblique, not with distinct longitudinal keels 

 laterally. 



Coloration only moderately distinctive, relatively constant from 

 young to aduh ; uniform bluish or grayisli below, with a deeper tint 

 of color at the sides of the abdominal region; stripes continued on 

 tail; tail light brown distally, darker proximally; femora distinctly 

 lined or reticulated with white; dorsal ground color brownish gray, 

 the space between the lower lateral stripes (field 1) usually some- 

 what lighter than the color of the other fields and usually reddish or 

 reddish brown ; all specimens with three prominent stripes on each 

 side, and in addition a vestige of a fourth pair anteriorly at base 

 of or directly posterior to the tympanum ; one or two middorsal 

 stripes present, often one which is more or less forked anteriorly. 



Only seven specimens of this species, including the type and 

 paratyj)es, have been available for this study. The data secured 

 from them may be summarized as follows : Body, 50-53 mm. ; tail, 

 120-131 ; total length, 170-183 ; length of tail as percentage of total 

 length, 70.4—71.5; width of head, 6.5-7.0; width of liead as per- 

 centage of body length, 13-14; hind leg, 35-37; length of hind leg- 

 as percentage of body length, 70-72; supraocular granules not extend- 

 ing forward past the anterior border of the fourth supraocular in 

 the specimens examined. 



The amount of contact between the anterior nasal and second 

 upper labial varies from a mere touching to an overlap of nearly 

 one-half the length of possible contact surface between these scutes. 



The condition of the lateral striping is constant, but that of the 

 middorsal area is highly variable. In U.S.N.M. No. 15598, a single, 

 wide, dorsal light streak is present. A close analysis shows this 

 streak to be made up of two white stripes l.ying side by side. Another 

 specimen (U.S.N.M. No. 15597) represents the transition from two 

 complete dorsal stripes to one, having an anterior fork which is 75 

 per cent as long as the entire dorsal area, fork and all. In other 

 examples (U.S.N.M. Nos. 21501, 15599-15600, and C.A.S. No 55810) 

 a single middorsal stripe is present, but it is found that the line is 

 of uneven width, being noticeably wider anteriorly. In the type 

 specimen a single dorsal stripe is widened and slightly forked just 

 back of the occiput. 



Range. — This little lizard inhabits sections of the northern half 

 of Lower California. Specimens have been examined from the 

 following localities: Cerros Island (Stejneger, 1890, p. 643, 

 U.S.N.M.) ; San Qv.".nthi (C.A.S.) . 



