49. sceLororus. 231 
fifty-two to fifty-six scales between the occipital shield and the base 
of the tail; twelve or thirteen (or fourteen) scales correspond to the 
length of the shielded part of the head; lateral scales keeled, 
directed obliquely upwards, a little smaller than dorsals ; ventrals 
smooth, more or less distinctly bicuspid; fifty or fifty-two scales 
round the middle of the body. The adpressed hind limb reaches 
between the shoulder and the ear; tibia as long as the shielded part 
of the head ; the distance between the base of the fifth toe and the 
extremity of the fourth equals the distance between the end of the 
snout and the middle of the oblique cervical fold. Sixteen to 
eighteen femoral pores. Caudal scales larger than dorsals. Male 
with enlarged postanal scales. Olive above, with two light yellowish 
bands along each side, and series of blackish spots, sometimes con- 
fluent into longitudinal bands; male with a blue, black-edged patch 
on each side of the body and some irregular blackish spots on the 
throat. 
millim. willim. 
Total length (tail re- BOGy 5.5 Shedd Sas 31 
produced) ...... 80 Fore limb ........ 17 
Gad see cone aceetnas il Hind limb........ 28 
Width of head .... 85 
Western North America and Mexico. 
ad. California. J. K. Lord, Esq. [P.}. 
b,¢. Q. Putla, Mexico. 
14. Sceloporus couchii. 
Sceloporus couchii, Baird, Proc, Ac. Philad. 1858, p. 254. 
“Cephalic plates smooth. Scales very small. About eighty oblique 
dorsal rows from head to tail. Femoral pores twenty-five. Colour 
above dark green, with two lateral light stripes, separated by eigh- 
teen rows of scales. Back with irregular spots. Sides witha white 
band from groin. An obsolete dark indigo patch on each side of the 
belly, widely separated below. Sides of jaws banded transversely 
with blue and whitish. A subcircular indigo patch in front of 
shoulder, surrounded by light blotches.” 
Santa Caterina, N. Leon. 
15. Sceloporus grammicus. 
Tropidolepis grammicus, Gray, Cat. p. 209. 
Sceloporus grammicus, Wiegm. Isis, 1828, p. 370, and Herp. Mex. 
p- 51; Bocourt, Miss. Sc. Mex., Rept. p. 192, pl. xviii. bis. fig. 12 ; 
Cope, Proc. Am. Philos, Soc. xxii, 1885, p. 895. 
pleurostictus, Wiegm. Isis, 1828, p. 370. 
Tropidolepis grammicus, Gray, Griff. d. K. ix. Syn. p. 43; Dum. § 
Bibr. iv. p. 308. ; 
Sceloporus lcloniits Cope, Proc. Ac. Philad. 1866, p. 322. 
Head-shields smooth or slightly rugose ; a series of feebly dilated 
