112 [October, 1841. 



larger and more uniform in size than those upon the vertex and face ; 

 scales upon the sides of the head of nearly uniform size, many of 

 them tuberculated ; there are nineteen teeth on each side of the 

 upper and lower jaw; scales upon the sides of the body of various 

 shapes, some of them hexagonal, others pentagonal; the greater 

 number are quadrangular : they vary also in size ; those upon the 

 body, near the spine, are the largest ; some of the scales present a 

 plane surface, others are more or less convex, and many on exami- 

 nation with a glass are observed to have a very distinctly elevated 

 point in the centre ; numerous small granules are interspersed be- 

 tween the scales upon the abdomen; none are observed upon the 

 sides : scales upon the throat irregular in size and shape, many of 

 them tuberculated, those along the median line the largest; scales 

 upon the abdomen granular, of nearly equal size, many of them 

 presenting an elevated point in the centre ; those upon the under 

 surface of the tail oblong, hexagonal, some of them pentagonal 

 many of them with a depression in the centre; those upon the 

 under surface of the hands and toes very distinctly quadrangular, 

 arranged in transverse rows; extremities slender; tail somewhat 

 longer (about a fourth of an inch) than total length of head and 

 body. 



Colour. The predominating colour is green, presenting different 

 shades under different circumstances ; at times, the snout and mar- 

 gin of the jaws, the neck, limbs and tail are marked with ferrugi- 

 nous; and a narrow vitta of a light chocolate colour is seen extend- 

 ing from the axilla to near the groin ; the whole of the body 

 presents at times the latter colour, mixed with dusky green or fer- 

 ruginous ; a triple row of black spots is observed upon the tail, 

 extending from the root to within a short distance of its extremity; 

 a similar row exists upon the back, corresponding with the trans- 

 verse processes of the vertebrae : while one side of the animal pre- 

 sents these shades, the other, or that which is less exposed to the 

 light, is of a uniform pea-green colour, except the lateral vitta and 

 a small spot above the shoulder, which are of a light flesh colour, 

 and at times perfectly white ; on exposing the animal suddenly to 

 the light of a candle, on one occasion, four or five irregular bands 



