CLASS REPTILIA. i 



^1 



cilis, Sh. Pel. Valakadin, Boie, Russ. t. 11. Disteria, Fitz. 



Pelamis Rupelii, Hyd. Schiddil, Boie. Russ. t. 12. 



Pel. melanurus/Hyd. melanurus. Wag. t. 3. 



b. The central ahdominal line formed of a series of long 



plates, 



Pelamis fasciatus, Daud. Hydrus, Sh. Russ. t. 44. Anguis 



laticauda, Lin. Pel. Kadll, Russ. t. 13. Pelamis 



curtus, Hyd. curtus, Shaw. Pelamis carinatus, Hyd. cari- 



natusj Cuv. Pel. Lindsayi. Gray. Mus. Brit. 



c. Head and body covered with small keeled scajes ; tail com- 



pressed. Chersydrus, Cuv. 



Ch. granulatus, Mer. Achrocordus fasciatus, Sh. Hy- 

 drus granulatus, Schn. 



d. Head and body covered with sm,all keeled scales ; tail 



conical. Achrocordus, Horst. 



Ach. dubius, Sh. Ach. Javanicus, Horst. 



e. Head shielded, with two soft scaly tentqcula, ventral- 



plates narrow ; tail long. Herpeton, Wagler. 



Herpeton tentaculatus, Daud. Erpeton, Lacep. Merrem. 



Amphibia. 

 Body with a naked skin. 



Order 1. MutxVbilia. 



Undergoing a transformation ; gills deciduous, covered 

 with a deciduous operculum. 



Gen. 1. Rana. 



Body thick, tailless; feet four, long ; sternum and clavicles 

 distinct. Larva elongate, fishlike, tailed and without legs ; 

 gills ibur on each side. 



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