418 TEIIDR. 
1. Cophias tridactylus. 
Microdactylus schlegelii, Gray, Cat. p. 57. 
Chalcides tridactylus, Daud. Rept. iv. p. 867, pl. lviii. fig. 3. 
— schlegelii, Dum. §& Bibr. p. 457. 
Both pairs of limbs with three clawed digital tubercles. Frontal 
pentagonal, longer than broad; interparietal triangular, oblong ; 
three supraoculars ; nasal large, oblong, quadrilateral ; a loreal ; six 
or seven temporals ; six upper and four lower labials; chin-shields, 
one anterior and two pairs. Scales quadrangular, juxtaposed, 
narrow on the back and sides, broader on the belly ; forty-six scales 
from occiput to base of tail, ten of which are anterior to the fore 
limbs ; twenty-six scales round the body. Three elongate preanals. 
oe scaled like the body. Upper surfaces olive-brown, lower 
rufous. 
millim. millim. 
Head and body.... 67 Fore limb........ 5 
Head oss pow ees 8 Hind limb........ 5 
Hab. 
2. Cophias heteropus. 
Herpetochalcis heteropus, Boettg. Ber. Offend. Ver. Naturk. 1883, 
p. 150. 
Fore limb with three, hind limb with two clawed digital tuber- 
cles. Internasal triangular, truncate in front; a long, triangular 
interparietal ; two supraoculars; six upper and four lower labials. 
Scales quadrangular, juxtaposed, thirty-four round the body. Six 
preanals. Four przanal pores. Yellowish, back darker; upper 
surface of tail with four light longitudinal bands. 
From snout to vent 54 millim. 
Central America ? 
3. Cophias flavescens. 
Chalcis flavescens, Gray, Cat. p. 58. 
P Chalcides flavescens, Bonnat. Encycl. Meéth., Erp. p. 67, pl. xii. 
fig. 3. 
Ohenescurs cophias, Schneid. Hist. Amph. p. 209. 
Chalcides monodactylus, Daud. Rept. iv. p. 370. 
Chalcis cophias, Merr, Tent. p. 75. 
Colobus daudini, AZerr. 7. c. p. 76. 
Chalcides cophias, Dum. § Bibr. p. 459; Gravenh. Nova Acta Ac. 
Leop.-Carol. xxiii. 1861, i. p. 806, pl. xxix. 
trilineatus, Peters, Mon. Berl, Ac, 1872, p. 775. 
Fore limb with three or four digital tubercles, hind limb undi- 
vided. Frontonasal trapezoid, nearly as broad as long; frontal large, 
pentagonal, longer than broad; parietals large ; no interparietal ; 
two supracculars ; nasal twice as broad as deep; loreal shorter, but 
a little deeper than the latter; two infraorbitals, anterior triangular 
