Suborder Sauria (Lizards).


Family Chamaeleonidae (Chameleons) Chameleons are distinguished from other lizards by three specific characteristics: its ability to change color, eyes set in turrets that can move independently of each other, and a highly extensible tongue which can be shot out at speed to a length greater than the chameleon's head and body.
Jackson's Chameleon (Chamaeleo jacksonii) Jackson's chameleons average 35 to 75 inches in length, with males being larger than females. Basic body color consists of varying shades of green with yellowish blotches, but it can be as dark as black when the animal is in great distress. Males have three long, pointed horns protruding from the head.
Great Plains Skink (Eumeces obsoletus) This the largest skink in the Midwestern United States, measuring 6½ to 9 inches, including the tail. This species is distinguished by its shiny scales and alert, agile appearance.

THE ROBINSON LIBRARY
Science.--Zoology.--Reptiles and Amphibians.--Order Squamata (Snakes and Lizards).