Dr. Kelaart's Catalogue of Reptiles collected in Ceylon. 137 



motive force enough to sustain tivo motive systems at one and 

 the same time : one is supplanted by the other. Ciliary is com- 

 muted into muscular motion. While studjang the mechanism 

 of respiration in the articulated animal, vibratile epithelium will 

 therefore nowhere demand attention : its agency will be found to 

 have been siibstituted by other instruments. 



An exposition of the preceding general principles has seemed 

 to the author indispensable to an intelligent study of the novel 

 and extraordinary details, upon which it is proposed next to 

 enter. 



[To be continued.] 



XV. — Catalogue of Reptiles collected in Ceylon. 

 ByE. F. Kelaart, M.D., F.L.S. &c. 



Order SAURIA. Lizards. 

 Suborder I. Leptogloss-«. Slender-tongued Lizards. 



Fam. Monitoridce. Monitors. 



Monitor Dracaena, Gray. 

 Hydrosaurus Salvator, ff^agler. 



Fam. Scincidee. The Seines. 



Riopa punctata. Gray. 



Hardwickii, Gray. 



Mabouia elegans (?), Gray. 

 Tiliqua rufescens. Gray. 



Fam. Acontiadce. 



Xessia Burtoui (?), Gray. 

 Acontias (?) Layardi, n. s., 7iobis. 



Fam. TyphlopsidtB. Typhlops. 



Argyrophis Bramicus, Baud. *Two varieties ; one with a pale white 

 streak beneath. 



Fam. Uropeltida. Rough-tails. 



Uropeltis grandis, n. s., nobis. 



SafFragamus, n. s., nobis. 



pardalis, n. s. nobis. 



Rliinophis (?) Blythii, n. s., nobis. 

 Siluboura Ceylonicus, Gray. 

 Dapatnaya Lankadivana, n. s., nobis. 

 Trevelyanii, n. s., nobis. 



