266 . 3. IGUANIDJE 



h*. Blue belly patches confluent with throat 

 patch, and not separated from each other 

 by a lighter or darker midventral band 5 

 ventral surfaces deep blue throughout. 

 S. o. taylori. p. 315. 



dd 3 . A definite black collar complete dorsally over 

 base of neck. 



eee. Dorsal scales smaller, 38 to 46 between inter- 

 parietal plate and base of tail. 



S. jarrovii. p. 321. 



eee*. Dorsal scales larger, 27 to 37 between inter- 

 parietal and base of tail. 



S. t. poinsettii. p. 326. 



b*. Parietal and f rontoparietal plates in contact with en- 

 larged supraoculars; scales on back of thigh not 

 smaller than those in front of anus. 



cc. A strongly contrasted black blotch or collar in front 

 of shoulder 5 dorsal scales distinctly keeled, with 

 long points. 



ddd. Scales larger, 25 to 32 between interparietal 

 and base of tail. 



eeee. Scales of anterior ear denticulation longer, 

 acuminate, often extending completely across 

 ear-opening 5 coloration largely brown and 

 yellow above. 



ff. Femoral pores 11 to 16, average 12.61; adult 

 males without narrow dark parallel lines on 

 lateral scales; no light middorsal longitud- 

 inal stripe one or two scales wide; often with 

 a broad dark brown dorsal band. 



S. magister. p. 329. 



