32 REPTILIA. 



rise like a Bird. They are small animals, completely invested with 

 little imbricated scales, of which those on the tail and limbs are ca- 

 rinated. Their tongue is fleshy, but slightly extensible, and some- 

 what emarginate. A long pointed dewlap hangs under their throat, 

 supported by the tail of the os hyoides; there are also two smaller 

 ones on the sides attached to the horns of the same bone. The tail 

 is long; there are no porous granules on the thighs, and there is a lit- 

 tle notch on the nape of the neck. Four small incisors are found in 

 each jaw, and on each side a long and pointed canine, and twelve 

 triangular and tribolate grinders. 



They consequently have the scales and dewlap of the Iguanse, with 

 the head and teeth of the Stellio. 



All the known species are from the East Indies; they were con- 

 founded for a great length of time, but Daudin has accurately 

 determined their specific differences.(l) 



SiTANA, Cuv.(2) 



Teeth of the Agamas and four canini; body and limbs covered 

 with imbricated and carinated scales; no pores on the thighs; but 

 their ribs are not extended outwards. It is distinguished by an 

 enormous dewlap which reaches to the middle of the belly, and 

 which is twice the height of the animal. 



Sit. ponticeriana, Cuv. is the only known species, and is from 

 the East Indies. It is small, fawn-coloured, and has a series of 

 broad, brown, rhomboidal spots along the back. 



It is perhaps to this tribe of Agamians that we should ap- 

 proximate a very extraordinary reptile which is only to be 

 found among the fossils of the old Jura limestone formation. 



Pterodactylus, Cuv. (3) 



It had a short tail, an extremely long neck, and a very large head; 

 the jaws armed with equal and pointed teeth; but its chief charac- 

 ter consisted in the excessive elongation of the second toe of the 

 fore-foot, which was more than double the length of the trunk, and 

 most probably served to support some membrane which enabled the 

 animal to fly, like that upheld by the ribs of the dragon. 



The second section of the Iguanian family, that of the Igua- 



(1) The Dragon ray e; the Drag, vert, Daud., Ill, xli; the Drag. brun. 



(2) Sitan is the name of the species on the Coast of Coromandel. 



(3) See my Oss. foss. 2d ed. Vol. V, p. 2, pi. xxiii. 



