PACHYDACTYLUS RUGOSUS. 
opening small, subovate, in a line with the angle of the mouth, and about two 
lines behind it. Plates of upper lip ten, the last very small, and situated 
immediately under the eye, considerably in front of the angle of the mouth ; 
plates of lower lip ten, the four last excessively small. Rostral plate five 
sided ; mental plate subtriangular ; neck narrower than the hind-head ; body 
subcylindrical ; extremities rather long and moderately robust. Toes rather 
slender, and towards and at the point slightly enlarged, the outermost and 
innermost of the fore feet equal in length, the second and fourth rather 
longer, the third longest, the middle one of the hinder foot rather longer 
than the other four, which are ol equal length. The point of each toe is 
superiorly covered by a large flat scale, like a nail, and inferiorly by four 
transverse angular cuticular folds, the angle equidistant from each extremity. 
The remainder of the under surface, behind these folds, is coated with three 
longitudinal rows of scales, those of the middle row the largest. All the toes 
clawless. The scales of the head are small and conical, or three sided, and 
are slightly separated from each other by the intervention of a few minute 
granular scales. The back and sides are covered with scales of a like 
description, but the tubercular ones especially on the back are much larger 
and many of them distinctly three sided, the anterior side generally very sharp 
01 keeled. The small ones, which intervene between the larger ones, vary 
in size, and have more or less conical or three sided ; many of the tubercles on 
the sides are perfectly conical and ribbed longitudinally. Scales on the under 
surface ol the head and body, and on the inner surface of extremities small, 
equal in size, and subconical ; on the outer surface of the extremities conical, 
large near the body, smaller towards the toes, and everywhere as on the back 
and head, slightly separated from each other by the intervention of small 
granular scales. The natural tail, there is reason to believe, is surrounded 
with rings of conical tubercles, and four such tubercles occur in a longitu- 
dinal row on each of its sides, immediately behind the base of the hinder 
extremity. Length from nose to base of tail 2 ^ inches. 
Inhabits the interior of Southern Africa. The specimen I possess is the only one I have 
yet seen. 
