— 301 — 

 Stenocercus seydi n. sp. 



Plate III, O.g. 1 and 2. 



No pterygoid teeth, no denticulation on tlie anterior border of the 

 ear. Nostril large, above the canthus rostralis, directed upvvards. Inter- 

 orbital space sligbtly grooved ; supraocular region witli four or five 

 longitudinal series of scales ; the scales of the two median rows are 

 much larger than those of the lateral rows and about twice as broad as 

 long. All the plates of the head, especially on the bind part, distinctly 

 corrugated. Temporal scales keeled; four upper and five lower labials; 

 four pairs of postgulars; the first in contact with each otber. A distinct 

 dorsal denticulation, disappearing at the middle of the tail. A fold 

 with raised pointed scales runs from the upper angle of the ear along 

 the sides of the body to the base of the tail, where it vanishes. 

 A distinct antehumeral fold and another parallel to and running before 

 that one to below the ear. Also these folds have the scales raised and 

 pointed and narrower than the dorsals, which are moderate, broad and 

 smooth on the base, but on the distal part they have a keel ending 

 in a sharp mucro; the scale-rows almost parallel to the dorsal crest; 

 the lateral scales but little smaller than the dorsals (thirteen corre- 

 sponcling with ten) ; they are of the same shape as these, but the keels 

 become fainter and the mucros shorter towards below. The ventral 

 scales as large as the dorsals, smooth, broad, and obtusely pointed: 

 the gulars like the ventrals, but under the neek the scales are larger, 

 longer, and narrower. The tail is nearly twice as long as head and 

 body, tapering and distinctly compressed. Caudal scales considerably 

 larger than the dorsals (seven corresponding with ten), sharply keeled 

 and pointed, forming rings; on the proximal part three rings with 

 large scales alternate with one with considerably smaller scales, but on 

 the distal part of the tail all the scales are alike. The scales on the 

 limbs like those on the body; the scales on the upper surface of the 

 tibia larger and more distinctly mucronated and more keeled than on the 

 remaining parts of the extremities. The adpressed bind lirnb reaches 

 the eye; fifth toe not extending as far as second: toes and fingers with 

 sharply keeled lamellae inferiorly, somewhat fringed laterally. 



The upper surfaces and the sides are dark brown : the cheeks, 

 the lower temporal region, the lateral longitudinal fold, and small 

 numerous oval spots on the sides whitish ; a dark streak from the eye 



