52 THE EEPTILES OF EGYPT. 
In B. tuberculatus the under surface of the digits is covered with broad, but slightly, 
if at all, imbricate, transverse plates, more or less swollen into eminences. A small 
somewhat tumid scale lies along either side of the lamellae, and the upper surface of 
the digits is covered with imbricate scales, the outermost row of which has the points 
of the scales directed forwards and outwards, so that when the digits are viewed from 
Eig. 4. 
Bunopus blanfordii, Strauch. One of the types, St. Petersburg Museum. 
below, the points of these scales are seen slightly to project, but not to the extent to 
entitle them to be regarded as a denticulation. 
In Ahophylax pipiens there is much the same structure, as there are the transverse 
plates and the row of small scales external to them ; but the former are simple, i. e. with- 
out eminences. In Stenodactylus elegans the lamellae are tricarinate, and the small 
row of scales external to them is better developed than in either Bunopus or Ahophylax ; 
and the side of the digit is distinctly dentate, owing to the greater development of the 
row of scales external to the line that runs along the side of the lamella?, and which I 
regard as the outer row of dorsal scales of the digit. S. lumsdeni has the similarly 
dentate digits of S. elegans, whereas in S. orientalis the dentations become converted 
into a fringe. In S. petrii there is an additional row of small scales external to the 
