SCELOPORUS. 69 
denticulations. Two series of large supraoculars, but the scutes of the outer series are 
sometimes unusually small. One canthal scale. Hind limb shorter than, sometimes 
nearly as long as, the distance of the vent from the collar; fourth toe longer than the 
head. Femoral pores from fifteen to seventeen. Green or greenish-bronze coloured, 
with a black patch on the lateral collar-fold, not extending across the neck. Males 
with the throat, the sides of the abdomen, and sometimes the pectoral region, blue; a 
median white abdominal band is separated from the blue by a black streak. 
Size of adult male 34 inches without tail. 
12. Sceloporus yarrovii. 
Sceloporus jarrovii, Cope in Wheeler’s Rep. Explor. W. 100th Mer. v. p. 569, t. 23. figg. 2, 2a-d; 
and Proc. Am. Phil. Soc. xxii. 1885, p. 396. . 
Sceloporus yarrovii, Boul. Cat. Liz. ii. p. 228. 
Hab. Nortu America, Arizona (Cope).—Mzxico, Ciudad in Durango (Forrer), Jalisco, 
north of Rio Santiago (Richardson). 
Thirty-one scales in a series along the back; scales on the back keeled, with a 
terminal spine. The large supraoculars not divided. Hind limb as long as the distance 
of the vent from the collar; fourth toe as long as, or longer than, the head. 
Seventeen femoral pores. Greenish, indistinctly spotted with black ; a dark black-and- 
white-edged collar across the neck; two light bands on each side of the neck, one 
above and the other through the tympanum. 
A female, adult or nearly so, measures 22 inches without tail ; an adult male 3 inches. 
13. Sceloporus consobrinus. 
Sceloporus consobrinus, Baird & Gir. in Marcy’s Expl. Red River, p. 287, t. 10. figg. 5-12; Cope, 
Proc. Am. Phil. Soc. 1885, p. 397; Boul. Cat. Liz. ii. p. 229. 
Hab. Norra America.—Mexico, Putla (Boucard). 
Thirty-one or thirty-two scales in a series along the middle of the back; scales on the 
back strongly keeled and with a terminal spine. Supraoculars broken up into small 
scutes, or, if two complete series can be ‘distinguished, the scutes of the outer series are 
very small. Length of the hind limb less than the distance between the vent and 
collar ; fourth toe scarcely as long as the head. From twelve to seventeen femoral 
pores. Upper parts light greyish or brownish, with a white band on each side of 
the back, bordered laterally by a series of black spots; generally a second white 
band from the axil of the fore limb to that of the hind limb. No collar. A 
black spot in front of the humerus, which in the male extends into the collar-fold. 
Sides of the head with two light bands, one above and one through the tympanum, both 
separated by a black streak. Male with the side of the throat and the sides of the 
abdomen blue, the remainder of the lower surface white. 
