156 IGUANIDE. 
20. Liolemus wiegmanni. 
Leioleemus wiegmannii, Gray, Cat. p. 216. 
Proctotretus wiegmannii, Dum. § Bibr. iv. p. 284; Bell, Zool, Beagle, 
Rept. p. 15, pl. viii. figs. 1,2; Guichen. in Gay, Hist. Chile, Rept. 
p. 86; Dum. Voy. Venus, Zool. p. 295, pl. iii. fig. 2. 
Ptychodeira wiegmanni, Litziny. Syst. Rept. p. 73. 
Rhytidodeira wiegmanni, Girard, Proc. Ae. Philad. 1857, p. 198, and 
U.S. Explor. Exped., Herp. p. 352. 
Ortholemus fitzroil, Girard, 1. c., and U.S. Explor, Exp. p. 373. 
Nostril sublateral. Upper head-scales very small, striated or 
feebly keeled in the adult; no frontal; interparietal and parietals 
subequal ; a series of four to six enlarged supraoculars ; two series 
of scales between the labials and the infraorbital; temporal scales 
keeled; anterior border of ear not denticulated. Sides of neck gra- 
nular, strongly plicate. Dorsal scales moderate, rhomboidal, strongly 
keeled, the keels forming continuous lines; lateral scales much 
smaller, imbricate, keeled ; ventrals smaller than dorsals, roundish, 
smooth ; forty-six to fifty-four scales round the middle of the body. 
The adpressed hind limb reaches the axil in the female, a little 
beyond the shoulder in the male; hinder side of thighs with a patch 
of enlarged rhomboidal keeled scales. Anal pores present in both 
sexes, five to cight in the male, three to eight in the female. Tail a 
little longer than head and body; caudal scales not larger than 
dorsals. Pale grey or greyish olive above, with two or four series of 
transverse, white-edged dark spots, separated by longitudinal light 
lines ; lower surfaces white. 
Total length .......... 185 millim. 
Head cid ei hes 6 ee ae 15. ,, 
Width of head ........ TS. is 
Body aces acta tees 44, 
Fore limb ............ 22 3; 
Hind limb............ 34, 
ad. og wishes aiease a telan a tos 18 25, 
Chili and North Patagonia to Uruguay. 
a-d. 3, her., & yg. Maldonado. C. Darwin, Esq. [P.]. 
CnGs Chili. 
f-t. SQ. Bahia Blanca. C. Darwin, Esq. [P.]. 
k-l. & & her. Uruguay. 
m. Hgr. Peru es J. E. Gray, Esq. [P.]. 
n-0. Bo. — 
21. Liolaemus occipitalis. (Pare X. fig. 3.) 
Liolemus occipitalis, Bouleng. Ann. §& Mag. N. H. (5) xv. 1885, 
p. 192. 
Nostril superior. Upper head-scales very small, convex, smooth ; 
no frontal; interparietal larger than the surrounding scales, as large 
as or larger than the tympanum; a series of three or four enlarged 
supraoculars ; two series of scales between the labials and the infra- 
