134 3. IGUANID& 



thigh, numbering from about 17 to 35 in the main series 

 and about one to 1 5 in the accessory row, or a total of about 

 17 to 47 pores per thigh. 



Although the coloration always is of the characteristic 

 type, it varies considerably in different individuals. If the 

 light areas be regarded as the ground color, this varies from 

 creamy or ashy white, or yellow to light brownish yellow 

 in adults and to pea-green or glaucous blue in young. The 

 entire upper surface of the neck, body and base of the tail, 

 is heavily reticulated with black in such a manner that the 

 ground color appears as more or less regular rings, half 

 circles, ellipses, or short bars, surrounded by black, each 

 ring with a central spot of black or reddish brown. The 

 black markings may be narrowly edged with reddish brown 

 or orange rufous. These ocellations may be less distinct in 

 the young. The sides of the neck and body, the upper 

 surfaces of the limbs, and distal portion of the tail are 

 spotted with black or brown. These spots tend to form 

 broken reticulations or short longitudinal lines on the tail, 

 but are small and rounded on the limbs. The lower sur- 

 faces are white or whitish usually with, but sometimes with- 

 out, blackish markings on the throat, sides of belly, and 

 under surface of tail. Black spots may or may not be 

 present behind one or both thighs. The black markings 

 on the throat may be absent, indistinct, or reduced, or two 

 or three transverse crescents and one to threeV-shaped marks 

 may be present. The black spots on the under surface of the 

 tail vary in number from none to seven. The black ventro- 

 lateral blotch varies much in size (0 to 12 mm.}, and may 

 be margined with green. The eyelids and sometimes the 

 sides of the head and tail in females may be tinged with 

 orange. 



Mr. Heller describes the coloration in life of an old 

 male as follows: "Above creamy white blotched with irregu- 



