252 
SCHLEGEL’S AREAl^G-EMENT OE SERPENTS. 
Fam. 2d.— SEA-SERPENTS. 
Gen. I. — Hydrophis. 
Sp. 1. 
Hydrophis schistosa, 
... 2. 
striata, 
... 3. 
nigrocincta, 
... 4. 
gracilis, 
... 5. 
Pelamys, 
... 6. 
... 7. 
colubrina, 
Fam. 3d.— venomous SERPENTS, PROPERLY SO CALLED. 
Gen. I.— Trigonocephalus. 
A. Mead covered hy Scales. 
Sp. 1. Trigonocephalus Jacaraca, 
... Brazil 
... 2 
atrox, 
. . Guyana 
... 3 
. . Antilles 
... 4. 
bilineatus, 
... South America 
... 5 
nigromaculatus, , 
... Ceylon 
... 6 
.. Sumatra 
... 7 
viridis, 
. .. Sumatra^ Celebes 
... 8 
. .. Java 
B. With Plates on the Head. 
, Java 
... 10 
hypnale, 
Ceylon, &c. 
... 11 
Halys, 
, .. Tartary 
... 12 
Blomhoffii, 
... 13 
cenchris, 
... North America 
Gen. II. — Crotalus. 
Sp. 1. Ci^otalus horridus, South America 
... 2 durissus, North America 
... 3. miliarius, North America 
... 4 mutus, South Americ 
Gen. III. — ViPERA. 
Sp. 1. 
Vipera arietans, 
... 2. 
Cape of Good Hope 
... 3. 
cornuta, 
... 4. 
Echis, 
India 
