6, CNEMIDOPHORUS.— 7. CALLOPISTES, 370 
millim. millim, 
Mead yc aun dey ie les 13 From end of snout to fore 
Width of head ........ 8 MD: fares Sdadcoe dee 19 
From end of snout to inter- From end of snout to vent 55 
parietal plate ........ 9 Fore limb ............ 19 
Width at posterior corners Hind limb............ 34 
of supraccular regions .  5°5 
Northern Patagonia. 
ao. Bahia Blanca. C. Darwin, Esq.(C.].  (‘Type.) 
b oS. ? Haslar Collection. 
16. Cnemidophorus heterolepis. 
Cnemidophorus heterolepis, Tschudi, Faun. Per., Herp. p. 40. 
Verticaria heterolepis, Cope, Proc. Amer. Philos. Soc. xi. 1869, p. 158. 
Dorsal scales smooth and granular on the nape and anterior part 
of the back, then becoming gradually larger, rhomboidal, keeled 
and imbricate. Ventral plates in ten rows. Preeanal plates irregu- 
lar, numerous. Frontoparietals united. Femoral pores seventeen to 
nineteen. Olive-green above ; young with several longitudinal dark 
bands; throat dirty white, coilar and breast shiny black; belly 
bright bluish green. 
Eastern Slope of Andes, Peru. 
7. CALLOPISTES. 
Callopistes, Gravenh. N. Acta Ac. Leop.-Carol. xviii. 1838, ii. p. 743; 
Gray, Cat. p. 17. 
Aporomera, Dum. § Bibr. v. p. 69. 
Tejovaranus, Steindachn, Denkschr. Ak. Wien, xxxviii. 1878, p. 98. 
Tongue long, narrow, bilobate and retractile at the base. Teeth 
compressed longitudinally, bi- or tricuspid. Head with very small 
shields ; anterior nasal separated from its fellow ; nostril pierced in 
the suture between the two nasals. Eyelids developed. Ear exposed. 
Limbs well developed, pentadactyle. Dorsal scales small, juxtaposed, 
equal; ventral plates rather small, elongate-quadrangular, smooth, 
forming regular series. A double collar-fold. No femoral pores. 
Tail cyclotetragonal. 
Peru, Chili. 
1. Callopistes maculatus. 
Callopistes celestis (non D’Orb.), Gray, Cat. p. 17. 
Callopistes maculatus, Gravenh. 1. vc. p. 744, pl. lv. fig. 1. 
Aporomera ornata, Dun. §& Bibr. v. p. 76; Guichen. in Gay’s Chile, 
Zool. ii. p. 58, pl. iii. fig. 1; Philippi, Reise Atacama, yp. 168. 
Ameiva oculata, D’Orbigny, Voy. Amer. Mér., Rept. p. 9, pl. v. 
figs, 6-9. 
Acpeecaety occllata, Guichen. i. ce. p. 61. 
In habit somewhat similar to Lacerta ocellata. Upper surface of 
