614 THE NATIONAL GEOGRAPHIC MAGAZINE 
HORNED LIZARD (Phrynosoma regale) : ARIZONA (SEE PAGE 616) 
The horned “toads,” more properly called the horned lizards, inhabit the desert regions 
of the United States and Mexico. Sixteen species are recognized. Photo by Raymond L. 
Ditmars. 
SPINY LIZARD (Zonurus giganteus) : SOUTH AFRICA 
Found in dry, rocky places. A big specimen is 15 inches long. Photo by Raymond I. 
Ditmars 
