Cope.1 268 [Oct. 1G, 



Cte^osaura brevirostris, sp. nov. 



Head short, -with obtuse muzzle with decurved profile. Eyes large ; 

 nostril near end of muzzle, in the anterior third of distance between end 

 of muzzle and orbit. The scales of the top of the muzzle and of the 

 frontal region, are subquadrate or subhexagonal, and those of the temporal 

 regions are but little longer than wide. All are more or less convex, the 

 temporals most so. There are six rows of scales between the nasal plates, 

 some of which are wider than long. Three canthal scales, of which the 

 anterior is horizontally divided in one specimen. Four rows of wide loreal 

 scales above four rows of narrow scales above the supralabials. Labials 

 13. Infralabials graduating in size to gulars, but there are five rows of 

 subcarinate scales distinctly larger. Two rows between the subquadrate 

 supraorbitals. Scales of lateral temporal region convex. Scales of belly 

 larger than those of back and sides, which are equal, except those of the 

 axillar, scapular and lateral cervical regions which are nearly granular. 

 Dorsal crest very low, continuous, excepting for a short distance at the 

 base of the tail. Tail nearly cylindric. The scales of the median superior 

 crest are not more prominent than those of the sides of the tail, but they 

 are not interrupted as are the latter. For the terminal three-fifths of the 

 length, the scales of the tail (except below) are equally spinous. For the 

 basal third they are separated above by two rows of non-spinous scales, 

 and on the lower parts of the sides by three rows. 



In both the specimens the femoral pores are exceedingly small and in- 

 distinct and are five in number on each thigh. The throat is distinctly 

 cross-folded, but very indistinctly longitudinally folded on the middle 

 line. The sides of the neck have two longitudinal folds. 



The general color of the head and body is a blackish-brown, paler below. 

 This is crossed on the back between the sacral and postscapular regions 

 by five yellow marks, which are bands posteriorly, but become spots an- 

 teriorly. The sides of the neck are of the same color, contrasting strongly 

 with the black of the throat and nape. This yellow space is partially 

 divided by a black line, which extends posteriorly from the angle of the 

 lower jaw. The limbs are blackish, and on the fore arm are numerous 

 yellow scales, and the tibia is faintly cross-banded. The digits and the 

 tail are annulated with blackish brown and yellow rings of about equal 

 width. 



Measurements. M. 



Total length to end of tail (end of latter imperfect) 645 



Length from muzzle to vent -42 



** " " " line of axilla 097 



" " " " " " meatus of ear 045 



Width at front of auditory meatus 040 



Length (axial) from orbit to end of muzzle 022 



" of fore leg 090 



" " fore foot 047 



