49. scELOPORUS. 229 
Var. thayeri. 
Sceloporus thayerii, Baird & Gir. Proc, Ac. Philad. 1852, p. 127. 
undulatus thayerii, Cope, Chech-List N. Am. Rept. p. 49. 
“Colour yellowish-green above, with two longitudinal bands of 
brown or black, and two yellow ones, on each side; sometimes, 
instead of bands, a series of small patches of the same colour is 
observed; the black patches also form transverse and undulating 
narrow bands. The belly is uniform yellow. The male has on 
each side an elongated patch of blue, with a narrow band of black 
along the abdominal margin; under the throat there is a median 
black patch limiting on each side another blue spot.” 
Gulf of Mexico to Sonora. 
Var. bocourtii. 
Sceloporus biseriatus (non Hallow.), Bocourt, l. c. p. 197, pl. xviii. bis. 
10. 
fie. 
smaragdinus (non Bocourt), Cope, in Wheeler’s Rep. Explor. 
WW. 100th Mer, v. p. 572, pl. xxiv. fig. 2. 
undulatus smaragdinus, Cope, Proc. Am. Philos, Soc. xxii. 
1885, p. 399. 
Scales of the auricular denticulation usually distinctly larger than 
those preceding. Thirty-six to forty-three transverse series of 
dorsal scales. Olive or brownish above, with four longitudinal 
series of dark brown spots; the male's lower surfaces sometimes 
blackish, with the exception of the throat and the sides of the belly, 
which are blue; throat and sides of the belly constantly blue or 
blue-green in the female and young, a mode of coloration which, 
in other forms, is restricted to the male sex. 
From snout to vent 83 millims. 
Western North America. 
ae. 9 & yg. Monterey, California. 
3. 
f-g. Mt. Whitney, California. Smithsonian Institution [P.}. 
hh Q. California. Smithsonian Institution [P.]. 
4, Ge Santa Cruz. Mr. Forrer [C.]. 
: e 
Sceloporus biseriatus, Hallow. Rep. U.S. Explor. Surv. R. R. x. 
part iv. 1859, p. 6, pls. vi. fig. 2, & viii.; Cope, Proc. Am. Philos. 
Soc. xxii. 1885, p. 395.—Is perhaps likewise a variety of S. wndu- 
latus, characterized by the much smaller lateral scales. 
California. 
12. Sceloporus consobrinus. 
Sceloporus consobrinus, Baird § Gir. in Marcy’s Explor. Red River, 
p. 237, pl. x. figs. 5-12; Cope, in Hayden's Rep. U.S. Geol. Surv, 
Montana, p. 468; Yarrow, in Wheeier’s Rep. Explor. W. 100th 
Mer. v. p. 574; Cope, Proe. Am. Philos. Soc. xxii. 1886, p. 395. 
tristichus, Cope, in Wheeler's Rep. Explor. W. of 100th Mer. v. 
. 871. 
y garmani, Bouleny. Proc. Zool. Soc. 1882, p. 761, pl. lvi. 
