TROPIDOI, EPISUNDULATUS. 53 



similar to those on the back; below, however, they are smooth. There are five 

 fingers, fiirnished each with a delicate, short and curved nail. The posterior 

 extremities are twice the size of the anterior, and are covered with similar scales, 

 with a range of sixteen or eighteen pores on the inferior surface of the thigh; 

 behind these are numerous small scales that make a sort of ridge. There are 

 five toes, long and slender, and scaled to the root of the nails, which are short 

 and curved. 



Colour. The head is dark brown above, with a black bar extending from orbit 

 to orbit; behind this is a dusky white bar of similar extent. The neck above is 

 dark grey; behind the tympanum are two or three scales with their margins of 

 bright red. The lower jaw is silvery grey; and the throat black, with a broad 

 green blotch ascending, to be visible on the side of the neck, sometimes interrupted 

 in the mesial line. 



The body is pepper-and-salt grey above, with five or six transverse black bands, 

 not of equal breadth in all parts, and having their posterior borders marked with 

 white blotches, which frequently become continuous, so that their posterior margins 

 appear tipped with a white edge. The abdomen is silvery grey, marked with 

 small, oblong, black spots; these are so disposed near the centre as to form an 

 interrupted line, which is most distinct between the thighs. On each side of the 

 abdomen is a long green blotch, surrounded with black, which runs to the anterior 

 extremities; and the lighter central portion of the abdomen meeting the lighter 

 line extended from the inferior surface of the anterior extremities forms a cross 

 on the thorax. 



The tail is dusky, with several transverse bands of black. 



The anterior extremities are dusky above, with transverse bands of black 

 even to the toes, with a few white spots on their anterior and posterior surface; 

 the under surface is silver grey. The posterior extremities are coloured like the 

 anterior, both above and below. 



