REPTILES. 



OEDEE I. LACEETILIA (Lizards). 



In these the quadrate bone is movable, but the under 

 jaw cannot be displaced (cf. Snakes). Legs are usually 

 present, but either or both 

 pairs may disappear. When 

 the legs are absent the 

 body is exceedingly snake- 

 like, but these forms, like 

 all other lizards, may be 

 distinguished at once from 

 the true snakes by the 

 presence of small scales on 

 the belly. Only one lizard 

 has the reputation of being 

 poisonous, but in former 

 times many, like the basi- 

 lisk, were fabled to have 

 most deadly powers. Among 

 the more interesting forms 

 are the " glass snakes," so 

 called from the ease with 

 which the tail breaks ; the 

 " horned toads/' which are 

 not toads, but true lizards; 

 and the chameleons, with 

 their wonderful powers of Fl - 24< ~ Green L J u i fken (An m - From 

 color change, a capacity 

 which is shared to a less degree by other forms. 



OEDEE II. OPHIDIA (Snakes). 



These are like the lizards in the movable quadrate, but 

 they differ in the absence of limbs and of sternum,, the pres- 



