292 



S A U R I A. 



Fig. 14, lower surface of the same. 

 Fig. 15, a group of dorsal scales. 

 Fig. 16, a group of abdominal scales. 

 Figs. 13-16 are somewhat magnified. 



2. GEKKO MONABCHUS, Gray. 



SPEC. CHAR. Numerous conical tubercles on the back, and small, flat, 

 polygonal scales. Ground color brown, with two longitudinal dorsal 

 series of black spots. Beneath white. 



STN. Platydactylws monarchus, SCHLEG. Mus. Leyd. DUM. & BIBR. Erpet. gen. 

 Ill, 1836, 335. 



Gecko monarchus, GRAY, Catal. Lizz. Brit. Mus. 1845, 161. 



OBSERV. The head is quite depressed, nearly wedge-shaped, sub- 

 conical anteriorly, and quite broad across the temporal regions. There 

 are two elongated mental shields, constituting one pair, on each side 

 of which may be seen two or three hexagonal small plates ; the sub- 

 gular scales adjoining being also somewhat larger than the rest. The 

 auricular aperture is vertically oblong, and rather large. The sides of 

 the neck exhibit several irregular folds. The upper surface of the 

 body and limbs is covered with very small, smooth and polygonal 

 scales, and numerous small conical tubercles irregularly dispersed 

 over the body and limbs, whilst on the tail, they are disposed upon 

 verticils : here the polygonal scales are likewise larger. A fold 

 of the skin extends from the axillae to the groins, separating the 

 dorsal from the abdominal region. Here the scales are much larger 

 than on the back, subquadrangular, or rather lozenge-shaped, nearly 

 equal : those on the chest being somewhat smaller ; under the throat, 

 they are smaller still, and under the head, almost granular ; under 

 the arm and in the axilla, granular also, increasing somewhat under 

 the forearm ; under the thighs and legs, they maintain good propor- 

 tions, in the midst of which, a series of sixteen or eighteen pores dis- 

 tinctly appears along each thigh, not continuous upon the interfemoral 

 region. On the posterior surface of the thigh, the scales assume a 

 granular aspect. 



The tail itself is longer than the body and head together, subquad- 

 rangular upon its base, conical, and tapering posteriorly. A series of 



