THE REPTILE BOOK 



PLATE XLVIII 



DITMARS'S HORNED LIZARD, Phrynosoma ditmarsii 



The horns are reduced to tubercles and the back lacks the spiny aspect of most of the species. Has been found 



in northern Sonora, Mexico 



MEXICAN HORNED LIZARD, Phrynosoma orbictdart 

 A large Mexican species. Most examples are of a dull red hue 



