8. TEIID& 521 



occipitals behind parietals and interparietal. Frontonasal 

 rarely divided or in contact with frontal. About five super- 

 ior and five or six inferior labials to a point below pupil. 

 Sublabials large, and, except anteriorly, separated from in- 

 fralabials by small granules and plates. Anterior gulars 

 largest centrally, becoming gradually smaller laterally and 

 anteriorly, and changing rather abruptly to smaller posterior 

 gulars. Central gular and collar scales averaging larger 

 than in C. t. tessellatus and C. t. mundus. Scales on center 

 of collar larger than those on its edge. Back covered with 

 small, smooth, convex granules usually slightly smaller than 

 in C. t. tessellatus and C. t. mundus. Ventral plates in eight 

 longitudinal rows. From two to five large plates, surrounded 

 by smaller plates and granules, in front of anus. Posterior 

 surface of forearm covered with small, nearly equal-sized 

 granules. Tail long, provided with rings of large, obliquely- 

 keeled scales. Femoral pores varying from 19 to 25 on each 

 thigh. 



The color above is yellowish or grayish brown, becoming 

 grayer toward the head and paler on the sides, with seven 

 or nine undulate black bands or longitudinal or rarely trans- 

 verse rows of irregular spots. The upper surfaces of the 

 limbs are brown or gray, reticulated with black. On the 

 sides of the head and neck are numerous large, well-defined 

 black blotches. The tail is yellowish or olive-brown, dark- 

 est along the keels of its upper scales. The lower surfaces 

 are yellowish white, rarely faintly washed with gray, usually 

 much spotted or blotched with black j the markings on the 

 gular region being numerous and large, often forming 

 irregular cross-bands. 



