TEIID LIZARDS OF TilK GENUS CNEMIDOPHORUS 245 



intensit}' may vary to a great degree in individuals from dili'erent 

 parts of the range. Other differences exist. There is, on the whole, 

 more bine in the ventral and caudal coloration of danheimac. Fur- 

 thermoi-e, the dorsal stri])es of the latter have the same intensity 

 and Avidth as those of the sides, while the dorsal stripes of 

 liyperytlirus have less intensitj^ and width than those of the sides. 



Description. — Snout only moderately pointed; nostril anterior to 

 nasal suture; anterior nasal not in contact with second upper labial; 

 supraoculars o— 1; position of supraocular granules variable; 

 frontoparietal 1: parietals 3; occipitals usually in 2 rows, anterior 

 largest; anterior gulars moderate to large, graded, and usually de- 

 cidedly larger centrally; posterior gulars small, granular; scales 

 of mesoptychium often large, these may or may not be largest cen- 

 trally^, sometimes uniform in size, usually in 4-G transverse rows. 



Body elongate; ventral plates in 8 longitudinal and 28-34 trans- 

 verse rows ; dorsal granules small ; limbs moderately well developed, 

 often rather weak in appearance; brachials 5-7; antebrachials 3-4; 

 brachials more or less continuous with antebrachials at a point of 

 contact; postantebrachium with a few enlarged granules, but with- 

 out scutes or polygones; femorals a-G; tibials 3-4; femoral pores, 

 13-18 on each thigh; tail relatively fragile, elongate, tapering; 

 caudal plates large, oblique, and with only moderately strong longi- 

 tudinal lateral keels. 



Coloration distinctive, relatively fixed from young to adult; ven- 

 tral and caudal aspect similar to that of hyperytliTus and caeruleus; 

 throat usually not orange-colored, often suffused witli blue or gray- 

 ish; under pai'ts usually bluish; tail usually lined laterally, and 

 sometimes dorsally; femur usually distinctly striped behind, unicolor 

 or obscurely reticulated al)ove; back Avith only one dorsal line, this 

 usually forked for about a short distance anteriorly; lateral stripes, 

 2 on each side, and of the same intensity as the dorsal line; ground 

 color of lower field, between the tAvo lateral stripes on each side, pale 

 sepia or reddish gra}' ; ground color of dorsal fields in sharp contrast 

 to the ground color of the lower fields, darker, and usually dark 

 grayish or black in tonality; spots absent from all fields. 



A series of 31 specimens of this small race-runner has been avail- 

 able for examination, and the data secured from them have been 

 summarized as follows : Body, 45-65 mm. ; tail, 131-193 ; total length, 

 176-258; length of tail as percentage of total length, 72.3-77.0; 

 width of head, 6-10; width of head as percentage of body length, 

 12.3-17.4; hind leg, 32-45; length of hind leg as percentage of body 

 length, 64.6-84.0; supraoculars, 3 in 22 specimens, 3-4 in 2 specimens, 

 and 4 in 7 specimens; sujn-aocular granules extending forward to the 

 center of the third supraocular in 20 specimens, to the anterior 



