252 schlegel's arraxgement of serpents. 



Fam. 2d.— SEA-SERPENTS. 



Gen. I. — Hydrophis. 



Sp. 1. Hydrophis schistosa, Gulf of Bengal 



... 2 striata, Indian Seas 



... 3 nigi-ocincta, Gulf of Bengal 



... 4 gracilis Indian Seas 



... 5 Pelaniys, Indian Seas 



... <» pelamoides, Indian Seas 



... 7 culubrina, Indian Seas 



Fam. .'Jd.- VENOMOUS SERPENTS, PROPERLY SO CALLED. 



Gen. I. — Trigonocephalus. 



A. Head covered by Scales. 



Sp. 1. Trigonocephalus Jacaraca, Brazil 



2 atrox, Guyana 



.. 3 lanceolatus, Antilles 



.. 4 bilineatus, South America 



.. 5 nigromaculatus, ... Ceylon 



6 Wagleri, Sumatra 



.. 7 viridis, Sumatra, Celebes 



.. 8 puniceus, Java 



B. With Plates on the Head. 



... ii rhodostoma, Java 



...10 hypnale, Ceylon, &c. 



...11 Halys. Tartaiy 



...12 Blomhoitii, Japan 



...13 cenchris, North America 



Gen. II. — Crotalus. 



Sp. 1. Crotalus horridus, South America 



... :2 durissus, North America 



... .S miliarius, North America 



... 4 mutus, South Americ 



Gen. III. — ViPERA. 



Sp. 1. Vipera arietans, Africa 



... 2 atropos, Cape of Good Hope 



... 3 cornuta, Cape of Good Hope 



... 4 Echis, India 



