CLASS REPTILIA. 



A. Head broad ; neck not dilatile ; sub-caudal plates double. 

 Sepedon, Merrem. Ophis, Spioc. Naia, Boie. Hsemaca- 

 thus, Flem. Causus, Wagler. 



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

 Scheush. Ph. Sac. iv. t. 71^7- 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, Zoo], iij. 423. 



Sepedon Merremii. Ophis Merremi 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. ]. Has been divided into two several species by 



Lauren te. 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, 



Merrem. 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. 35. f. 2. 54. f. 1. 



Elaps Lemniscatus, Cuv. Col. Lemniscatus, Lin. 



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



G 2 83 



