132 



SAUEIANS. 



great quickness in the loose sand. This Lizard, from its flattened 

 body and short legs, cannot run quickly." With others these 

 Lizards constitute the sub-family Tropidolepinm of Dr. Gray, 

 which are followed by the sub-family PhrynosomiiKB, in which some 

 very singular Lizards find their place. The most extraordinary 

 of them constitute the genus Phrynosoma, four species of which 

 inhabit Western North America. These have great spines to 

 the occiput, in these respects resembling the African genus Cor- 

 dylus (p. 107), and very Toad-like proportions, looking somewhat 

 like Toads with short tails ; and again they decidedly approximate 

 in appearance to the curious Moloch horridus of Western Australia, 

 which belongs to the corresponding Old World family of Agan- 

 cida; and, like that strange reptile, they are slow of motion, and 

 perfectly harmless, and they may be handled with impunity, as 

 they never attempt to bite.] 



Flying Lizards. 

 Flying Lizards {Draco) have the head small,. the nostrils 



Fig. 30.— Flying Lizard {^Dracovolans). 



in a scale, tubular, on the side ridge ; tympanum white 

 and opaque. They live on trees, walking with agility with 

 their wings folded by their Sides. These wings they expand 



