120 IGTrANIB^. 



3. Enyalius iheringii. (Plate YII.) 



Enyalius iheringii, Bonleng. Ann. 8f Mag. N. H. (5) 1885, xv. p. 192. 



Distinguished from E. catenatus in the following points : — Nostril 

 nearly equally distant from the orbit and the tip of the snout. The 

 scales on the vertebral region relatively larger, subrhomboidal, flat, 

 distinctly keeled. Limbs shorter ; tibia shorter than the head ; the 

 adpressed hind limb reaches the anterior border of the orbit in the 

 male, the angle of the mouth in the female. Purplish-brown above, 

 the male uniform, the female with an alternating series of black 

 spots on the vertebral region, and on each side from nape to base of 

 tail, a broad yellow band ; lower surfaces brownish or purplish. 



j<_ o ^ 



Total length 292 297 miUim. 



Head 25 26 „ 



Width of head ..18 20 



Body 67 71 „ 



Fore limb 50 50 



Hind limb 80 76 



Tail 200 200 „ 



Southern Brazil. 



a-b.(S2' Eio Grande do Sul. Dr. H. v. Ihering [C.I. 



(Types.) 



4. Enyalius caerulescens. 



Enyalius cferulescens, Cojte, Journ. Ac. PMlad. (2) viii. 1876, p. 169. 



" A dentellated nuchal crest, a vertebral band of linear scales ; 

 no caudal crest ; tail subround in section. Head wide, the muzzle 

 parabolic, its entire surface, including the supraorbital region, covered 

 with equal, acutely tubercular scales. Three rows intervene between 

 the superciliary rows ; occipital scarcely distinct. Xostril pierced 

 in a small round shield, nearer orbit than end of muzzle. Loreal 

 region very short, with ten scales in a vertical line. Supraocular 

 scales eighteen, counting to nostril. Labials 11-11 ; a short series 

 of distinct, smooth infralabials. Auricular opening large. Dorsal 

 scales very small, keeled, in transverse rows ; abdominal scales 

 larger, in cross series, interrupted on the middle line, keeled. The 

 hind leg and wrist extend to front of orbit. Colour black, with 

 numerous indistinct blue cross bands. Limbs, especially the fore- 

 arm, and the sides of the neck, dark blue. Lower surfaces white, 

 except throat and chin, which are blackish-blue." 



Total length 185 millim. 



Length to vent 72 „ 



„ to ear 18 „ 



Amazons, Peru ? 



