Plate 31 



FAMILIES IGUANID.E, ZONURID^ 





MEXICAN HORNED " TOAD " Phrijnosoma orbiculare. 



(Fam. Iguanidce.) 

 Lives in the desert regions of Sonora, Mexico. Its color is a dull 

 brick red. The horns are but slightly developed, as compared with 

 some species of the genus. 



SPINY LIZARD Zonurus giganteus. (Fam. Zonurida.) 



Distribution: South Africa in dry, rocky places. 



Grows to a length of fifteen inches. 



