24, LIOLAMUS. 147 
or three anal pores. Tail about once and a half as long as head 
and body ; caudal scales as large as dorsals. Greyish olive above, 
spotted with dark brown, and with or without a black vertebral 
line, or dark olive with small pale greenish spots or dots; lower 
surfaces greyish, mottled with blackish, or blackish. 
Total length .......... 175 millim. 
ORG Si ico occa Alotacti enna 16 sO, 
Width of head ........ 12 
DOCH aeteacdnd a gacdnsauseay 54, 
Fore limb ............ 25s; 
Hind. Mim. wo eee 40, 
Vale id cigcecevwis lana baal es 105, 
Chili; Patagonia. 
a. Her. Port Desire. C. Darwin, Esq. [P.]. (Type.) 
b-c. S. Chili. (Types of L. lineatus.) 
a 9. Chili, (Type of L, bellit.) 
e 2. Chili, 
10. Liolemus nigromaculatus. 
Leioleemus nigromaculatus, Gray, Cat. p. 218. 
-—— inconspicuus, Gray, 1. c. 
Tropidurus nigromaculatus, Wiegm. Nova Acta Ac. Leop.-Carol. xvii. 
1835, i. p. 229. 
? Tropidurus oxycephalus, Wregm. J. c. p. 282. 
Proctotretus nigromaculatus, Dum. § Bibr. iv. p. 281; Bell, Zool. 
Beagle, Rept. p. 10, pl. iv. fig. 2; Guichen. in Gay, Hist. Chile, 
Rept. p. 34; Dun, oy. Venus, Zool. p. 293, pl. ii. fig. 1. 
Liolemus oxycephalus, Gravenh. Nova Acta Ac. Leop.-Carol. xviii. 
18338, ii. p. 735, pl. liv. fig. 13, 
conspersus, Gravenh. lc. p. 737, fig. 14. 
Ptychodeiva nigromaculata, Fitzing. Syst. Rept. p. 73. 
Rhytidodeira nigromaculata, Gerard, Proc. Ac. Philad. 1857, p. 198, 
and U.S. Explor. Exped., Herp. p. 353. 
oxycephala, Girard, Ul. ce. pl. xxviii. figs. 26-38. 
Proctotretus pallidus, Philippi, Reise Atacama, p. 166, pl. vi. fig. 3. 
bisignatus, Philippi, lc. fig. 2. 
Nostril lateral. Upper head-scales rather large, smooth ; a small 
azygos frontal, separated from the interparietal by a pair of fronto- 
parietals ; interparietal smaller than, or nearly as large as, parietals ; 
a series of three or four broad supraoculars; a single series of scales 
between the labials and the infraorbital ; temporal scales smooth or 
very feebly keeled; three or four large, pointed scales projecting in 
front of the ear, largest and nearly covering the latter in the full- 
grown male. Sides of neck covered with very small scales, which 
are lanceolate and somewhat raised on the longitudinal fold; an 
indistinct curved antehumeral fold. Dorsal scales moderate, rhom- 
boidal, strongly keeled, pointed; ventral scales smaller, rounded 
or obtusely pointed, smooth ; forty-eight to fifty-four scales round 
the middle of the body. The adpressed hind limb reaches 
L2 
