324 3. IGUANIDM 



side of the belly are deep indigo, sometimes shading to black 

 en the chest and groin. 



The color in life is as follows: In an adult male, the 

 collar is blue-black with some brilliant blue extending up 

 from the throat near its anterior edge. The scales of the 

 back and sides of body are outlined with black while the 

 central portion of each scale is light, and in different lights 

 appears white, gray, green, yellow, or irridescent bronze. 

 The head, limbs, and tail are dark brown much relieved 

 with malachite green. A whitish or irridescent bronze line 

 runs back from the eye. Another runs along the upper lip 

 to the ear. A similarly colored longitudinal bar extends 

 forward on each side of the neck from the collar, and a 

 band of the same tint, a scale in width, borders the collar 

 behind except in the middorsal region. The collar is com- 

 plete across the neck, and has a brownish continuation for- 

 ward on the middle of the neck to the head. The chin, 

 lower surfaces of the limbs and tail, and the center of the 

 chest and belly are gray. The entire gular region and a 

 stripe along each side of the belly are deep blue, the belly 

 patches shading to malchite green laterally. 



Females and young are similarly but less clearly and 

 brightly marked, particularly as regards the light centers of 

 the scales, the intense black collar, and the blue of the In- 

 ferior surfaces. In young specimens the predominant color 

 is brown; though the characteristic collar shows in even the 

 smallest specimens. The blue throat patch always is single. 



