12. ENYALITJ8. 117 



ones ; the four or five series contiguous to the dorsal crest larger, 

 rhomboidal, strongly keeled, the keels obli(iuely directed upwards. 

 Limbs moderately long, covered with unequal strongly keeled scales ; 

 the adpressed hind limb reaches the tympanum or the temple ; digits 

 rather short, sharply denticulated. No femoral pores. Tail com- 

 pressed, as long as or a little longer than head and body, covered 

 with strongly keeled scales of unequal size formiug regular segments. 

 Yellowish or greyish above, with more or less distinct darker mark- 

 ings, viz. irregular oblique bands down the sides, or a network ; tail 

 with brown annuli ; lower surfaces brownish white ; the male's 

 throat bright yellow. 



Total length 235 miUim. 



Head 32 „ 



Width of head 25 „ 



Body 88 



Fore limb 59 



Hind Hmb 78 



Tail 115 



ij 



i> 



jj 



Eastern Peru. 



a. (S ' Casliiboya. Messrs. Veitch [P.]. (Type.) 



b-c. (S 2 • Yurimaguas, Huallaga River. Dr. Flahnel [0.]. 



12. ENYALIUS. 



Uraniscodoii, part., Kaup, Isis, 1826, p. 89. 



Opliryoessa, part., Fitzing. N. Classif. Rept. p. 17 ; Wieym. Heip. 



Me.v. p. 15. 

 Enyahus, Wcujler, Si/sf. Amph. p. loO ; Diwi. <Sr Bihr. iv. p. 230 ; 



Fitzinf/. Syst. Rept. p. 57 ; Gray, Cat. Liz. p. 195. 

 Lfemanctus, part., Wicgm. I. c. pp. IC), 46 ; Bum. ^" Bihr. p. 70. 

 Dryophilus, Fifzing. I. c. 

 Urostrophus, part., Fitziuq. I. c. p. 62 ; Cope, Proc. Ac. Philad. 1864, 



p. 176. 

 Ecphymotes, part., Gray, Cat. p. 184. 



Tympanum distinct. Body feebly compressed ; a slight dorso- 

 nuchal crest ; dorsal scales small. Head-scales small. A trans- 

 verse gular fold; no gular pouch. Digits scarcely compressed, not 

 denticulated laterally, with smooth or obtusely keeled lamellae in- 

 feriorly. No femoral pores. Tail long, round or slightly compresssd. 

 Lateral teeth tricuspid ; pterygoid teeth*. No sternal fontanelle. 

 Abdominal ribs. 



South America. 



SynopHis of the Species. 



I, Lateral scales not distinctly keeled. 



Nostril considerably nearer the tip of the 

 snout than the orbit ; tibia longer than 

 the head ; ventral scales strongly keeled . . 1. catenatus, -p. 118, 



* Absent in E. fitzingeri ? 



