Plate 32 



FAMILY HELODERMATIDM 



GILA MONSTER Ueloderma suspectum. 



This and the species figured beneath are the only known poisonous 

 lizards. The Gila Monster is found in desert regions of Arizona and 

 New Mexico. Its maximum length is about twenty inches. 



MEXICAN BEADED LIZARD Heloderma horridum. 

 Distribution: Arid regions from central Mexico to northern Cen- 

 tral America. 



