340 TEIID. 
1. Centropyx striatus. 
Acanthopyga striata, part., Gray, Cat. p. 23. 
Lacerta striata, Daud. Rept. iii. p. 247. 
Pseudoameiva striata, Fitzing. N. Class. Rept. p. 51. 
Trachygaster striatus, Wagl. Syst. Amph., p. 154. 
Teius (Centropyx) striata, Gray, Griff. A. K. ix. Syn. p. 31. 
Centropyx striatus, part., Dum. § Bibr. v. p. 151. 
decodon, Cope, Proc. Philad. Ac. 1861, p. 495. 
renggerii, Peters, Mon. Berl, Ac. 1869, p. 63. 
Posterior head-shields keeled. Gular scales rhomboidal, imbricate, 
strongly keeled, gradually enlarged towards the middle ; the border 
of the collar strongly dentated, formed of twelve plates. Median 
dorsal scales very large, strongly imbricate, with sharp keels 
forming fourteen straight longitudinal lines ; scales on the nape and 
on the sides small, subimbricate, keeled. Ventral plates in fourteen 
longitudinal and thirty-two transverse series. Six longitudinal 
series of enlarged keeled brachial scales and five of antebrachials, 
the keels of third and fourth of former continuous with the keels of 
fourth and fifth of latter. Ten rows of femoral plates and about 
twelve of tibials. Femoral pores seven. Male with two large 
preanal spines on each side. Olive; a few black spots on each side 
of the anterior part of the body. 
millim. millim 
Total length ...... 307 Fore limb ........ 34 
Head............ 23 Hindlimb........ 61 
Width of head .... 15 Rails “aesea pia aatarsr a 215 
BOG Yaw Giaaeeriee ootare 69 
Northern South America. 
ao. —?P 
2. Centropyx intermedius. 
Acanthopyga striata, part., Gray, Cat. p. 23. 
Centropyx calcaratus, Gray, J. ¢. 
Merrem, Ann. Wetterauisch, Gesellsch. i, 1809, p. 2, pl. i. 
Lacerta striata (non Daud.), Merr. Tent. p. 65. 
pie. Mma) intermedius (Schieg.), Gray, Griff. A. K. ix. Syn. 
p. 3l. 
Centropyx striatus, part., Dum. & Bibr. v. p. 151; Troschel, in 
Schomburgk, Reise Brit. Guian, iii. p. 651. 
intermedius, Cope, Proc. Ac. Philad. 1861, p. 496. 
—— borckiana, Peters, Mon. Berl. Ac. 1869, p. 64. 
Distinguished from the preceding by the much smaller dorsal 
scales, the keels of which are not continuous, but directed towards 
the median line of the back. Ventral plates in fourteen or sixteen 
longitudinal and thirty-three to thirty-five transverse series. 
Femoral pores eleven to fifteen. Digital denticulations stronger. 
Olive ; a light line on each sido, beginning from the eye, bordered 
