46 MR. G. A. BOULENGER ON A NEW LIZARD. [Feb. 6^ 



5. Description of a new Species of Lizard of the Genus 

 Enyalius. By G. A. BoulengeRj F.Z.S, 



[Eeceived January 30, 1883.] 

 (Plate X.) 



Enyalius palpebralis, sp. n. (Plate X.) 



Head broad, rounded, once and one third as long as broad, covered 

 with irregular strongly keeled or conical scales, those on the canthus 

 rostralis and the superciliary border a good deal larger and project- 

 ing. No distinct occipital. Loreal region concave, v?ith small, 

 irregular, keeled scales. Temporal region with small convex scales, 

 intermixed with larger conical ones. Superciliary border much pro- 

 duced posteriorly, with a strong denticulation formed by seven large 

 pointed scales, the hinder three largest, subequal ; three large conical 

 scales behind the orbit, followed by an oblique series of five conical 

 scales. Labials about 15, equal. Scales of the back and sides 

 small, keeled, irregular, intermixed with larger conical ones ; the 

 four or five series contiguous to the dorsal crest larger, rhomboidal, 

 strongly keeled, the keels obliquely directed upwards. A nuchal 

 crest formed of four large scales, the highest measuring the vertical 

 diameter of the ear-opening, separated from the dorsal crest by an 

 interspace equal to its length. A strong dorsal crest, gradually 

 diminishing in height to the base of the tail, where it becomes double 

 and indistinct ; the highest scale of the dorsal crest measuring three 

 fourths the vertical diameter of the ear-opening. Gular scales 

 keeled, the median subconical. Scales on the limbs and on the pec- 

 toral aud ventral regions strongly keeled. Tail compressed, with 

 verticillate strongly keeled scales, five or six verticilli, gradually in- 

 creasing in size. Upper surfaces yellowish brown ; back with blackish 

 markings, forming indistinct oblique bands down the sides ; limbs 

 marbled with brown ; tail with brown anuuli, interrupted iuferiorly ; 



lower surfaces immaculate. 



millim. 



Total length (tail injured) 235 



From tip of snout to ear-opening 31 



„ „ fore limb 50 



„ „ vent 120 



Length of fore hmb 59 



„ hind limb 78 



A single (female) specimen, presented by Messrs. Veitch, is in the 

 British Museum. It was collected by Mr. W. Davis at Cashiboya \ 

 in Eastern Peru. 



' See map in P. Z. S. 1875, p. 252, pi. xxv. 



