REPTILIA 



553 



Family Anniellidae (blindworm, "worm snake," worm lizard). — 

 This family consists of one genus and two species found in southern 

 California. These small, legless, wormlike lizards are burrowing in 

 habit. The ears are concealed and the eyes are covered by translu- 



Fig. 295. — Collared lizards, Crotaphytus collaris, female and male. This is a 

 beautiful lizard of the Southwest. (Courtesy of Ottys Sanders, Southwestern 

 Biological Supply Company.) 



cent skin and poorly functional. The tongue is protractile as in 

 the members of the Anguidae. 



Family Helodermatidae (Gila monsters, beaded lizards). — This 

 family contains one genus and two species. One species, Heloderma 

 suspectum, is found in Arizona, New Mexico, and northern Mexico. 



