CLASS REPTILIA. 



A. Head broad ; rieck ruyt dilatile ; sub-caudal plates double. 

 Sepedon, Merrem. Ophis, Spix. Naia, Boie. Haemaca- 



. thus, Flem. Causus, Wagler. 



Sepedon Rhombeata, Licht. Col. Vip. Nigrum, Licht. 

 Scheush. Ph. Sac. iv. t. 7^7- Naia Rhombeata, Boie. 



Mus. Leyd. Sepedon Hoemachates, Merrem. Hoema- 



chate, Lacep. L. O. ij. t. 3. f. 2. Vipera Hoemachates, 

 Seba, ij. t. 58. f. 1, 3. Naie Hoemachate, Boie. Sepe- 

 don Porphyraceus. Coluber Shaw, Zool. iij. 423. 



Sepedon Merremii. Ophis Merrerai Spix, Braz. t. 17- 



B. Head narrow ; neck dilatile ; dorsal scales linear ; tail 

 conical; sub-caudal plates two-rowed. Naja, Daud. 

 Uraeus and, Aspis, Wagler. 



Naia Tricuspidans, Merrem. Col. Naja. Latr. Rus- 

 sel, I. S. j. t. 5 and 6. ij. t. 1. Daud iv. t. 60. Lacep. ij. 

 t. 3. f. 1. Has been divided into two several species by 



Laurente. Naja Haje, Merrem. Col. Haje, Hasselq. 



Vipera Haje, Daud. Geoff. Rept. Egypt, t. 7- Savigny, 



t. 3. Africa. Naja Nivea, Cuv. Boie. Isis, xx. 557- 



Vipera Flava, Merrem. Cape of Good Hope. Naja 



Spectatrix. Reinw. Boie. Iris, xx. 557* Elaps Fuscus, 



Merremr Col. Castaneus, Oppel. Russel. ij. t. 36. Naie 



Latratus. Boie. Col. Latratus, Kuhl. Beytr. 69. 



C. Head narrow ; neck not dilatile; dorsal scales equal; 

 tail conical^ moderate ; sub-caudal plate two-rowed 

 Elaps. - " 



Elaps Anguiformis, Schn. Elaps Lacteus. Col. Do- 

 micella, Lin. Col. Domicellarum, Lac. Col. Lacteus, Lin. 

 Mus. Adolph. t 17. f. 1. Seba, ij. t. a5. f. 2. 54. f. 1. 



Elaps Lcmniscatus, Cuv. Col. Leraniscatus, Lin. 



Seba, j. t. 10. ij. t. 76. f. 2. Elaps Surinamensis, Cuv. 



c 2 83 



