224 REPTILES. 



The Dotted Plica. Plica punctata. Hypsibatus puncta- 

 tus, Dum. et Bib. E. G. iv. 258. 



Tail strongly compressed, with a toothed crest above ; head- 

 shields numerous ; grey, with white spots above, beneath whitish. 



Inhab. Tfopical America. Mus. Paris. 



E. Body depressed, with small scales. Back scarcely crested. 

 Tail conical. Phrynosomina. 



a. Scales of body and tail small, uniform. 



44. Leiosaurus, Dum. et Bib. 



Head short, depressed, covered with very small flat or convex 

 scales, the interparietal small, indistinct Eyes edged with small 

 scales beneath. Back and tail not crested. Tail short, rounded, 

 thick at the base, end slender, covered with small scales like the 

 back. Palate toothed. Femoral pores none. Toes 5-5, short, 

 thick, subcylindrical, furnished below with a row of smooth or 

 keeled scales. Claws nearly straight. 



* Scales under the toes small. Toes not fringed. Leiosaurus. 



Bell's Leiosaurus. Leiosaurus Bellii, Dum. et Bib. E. G. 

 iv. 242, t. 39,/. L 



Back with a series of angular black spots, each formed of 3 

 spots more or less united, the central spot being the largest ; the 

 scales under the toes narrow, keel-less ; toes not fringed on the 

 edge. 

 a. In spirits. S. America. Presented by Thos. Bell, Esq., from 



the collection of Capt. P. P. King. 



** Shields under the toes broad, 2 or 3 keeled. Toes fringed. 



Ptenodactylus. 



The Banded Leiosaurus. Leiosaurus fasciatus, D^Orbigny, 

 Voy. Amer. Merid. Erp. t. 3,/. G, 7. Dum. et Bib. E. G. iv. 244. 



Back with broad black bands ; toes very finely fringed on the 

 inner side ; scales under the toes very broad, 2 or 3 keeled ; inter- 

 parietal plates very small. 



Inhab. S. America. Mus. Paris. 



45. DiPLOLiEMUs, Bell. 



Head short, broad, subtriangular, covered with small rounded 

 not imbricate scales. Ears small, ovate, front edge smooth. Eyes 

 with a large arched plate beneath. Nostrils large, rounded. The 

 neck with a transverse plait below and folds on the sides. Body 

 rather depressed, not crested, with very small, smooth, convex, 

 scarcely imbricate scales ; belly with flat smooth scales. The tail 

 round, short, smooth. Feet strong, robust. Femoral and preanal 

 pores none. Palate toothless. 



