204 VEBTEBRATA. 



Body, and especially the head, somewhat depressed, covered 

 with small scales more or less tuberculate. Eyes large, with 

 frequently a linear vertical pupil. 



Found under stones and in houses in most warm climates, 

 running up the walls or on the ceilings. Many species are noc- 

 turnal. 



Geccotids. Phelsuma. Hemidactylus. 



CEdura. Naultinus. Ascalabotes. 



Ptyodactylus. Phyllurus. Gecco. 

 Ptychozoon. 



DBNDROSAURA ( = Vermilinguia=Rhiptoglossi). Tongue long, 

 club-shaped, extensible. Eyes large, covered, except around the 

 pupil, by a circular lid. 



Body compressed, covered with a shagreened skin. The head is 

 more or less crested. The toes are divided into two equal sets. 

 The tail is round and prehensile. 



Confined to the warmer parts of the Old World. They are 

 exceeding slow in progression. The power of changing colour is 

 common to these and to many other lizards. 



Cham&leontidce. 



Chamaeleon. 



Rhampholeon. 



RHYNCHOCEPHALIA. Vertebrae amphicceloua. Quadrate bone 

 immovably united to the skull. 



There is a complex abdominal sternum as in the crocodiles, 

 and the lungs have large air-cells as in the Amphibia. 



This group is represented by Hatteria putwtata, a large sluggish 

 New-Zealand lizard, now almost extinct. A second species from 

 Cook's Straits (H. Guntheri) has been described. 



HatteriidcB. 

 Hatteria= Sphenodon. 



AMPHISB^ENOID^A (= Annulata). Tongue short. Eyes very 

 small or wanting ; no eyelids. No legs, except a small fore pair 

 in Chirotes. 



Body cylindrical, the head and tail being alike. The scales 

 are arranged in rings round the body. 



These are serpent-like, sluggish animals living in or near ants'- 

 nests, and are mostly nocturnal. 



