64 IGUANIDA. 



11. Teeth solidly united to the most prominent part of the jaws, which ofler no 

 groove. 



Four genera only of this family are found within the limits of the United 

 States, viz: Anolius, Tropidolepis, Crotaphytus and Phrynosoma. The three first 

 include each one species, and the latter four. 



