CLASS III. REPTILIA. 
XXIX 
ORDER III. — Ophidia. 
This order is primarily divided into three families : I . the Snakes, 
Anguis ; 2. the true Serpents; and, 3. the naked Serpents. Of 
these, the 1st and 3d contain each but one genus ; the 2d contains 
all the rest, and, as these differ in several respects, is subdivided, 
1st, into two tribes, the Double-marcheurs, that is, those that move 
with either end foremost, and the Serpents proper, which always 
advance with the head in front. The Serpents proper are then di- 
vided according as they are non-venomous or venomous ; and after- 
wards these latter according as they have isolated fangs, or fangs ac- 
companied by the ordinary jaw teeth. Finally come the division 
into genera, subgenera, and species ; but of all these our plan and 
limits will only permit us to notice the families, genera, and subge- 
nera, illustrating as usual with a specific example of each. 
Family. 
S 
H 
H 
Ph 
PS 
W 
m 
w 
p 
Pi 
H 
Genus. Subgenus. 
] . Pseudopus, Merrem. . 
1 2. Ophisaurus, Baud. 
Anguis, L . . S 3 . Anguis, prop. Cuv. 
\ 4. Acontias 
I. Amphisbmna, L 
II. Typhlops, Schn 
III. Tortrix, Oppel | 
IV. Uropeltis, Cuv 
S I. Boa, prop. Cuv. . 
2. Scytale, Mer 
3. Erix 
4. Erpetus, Lacep . . . . 
^ 1. Python, Baud. . . 
2. Cerberus, Cuv 
3. Xenopeltis, Reinw. . 
4. Heterodon, ( 
Beauv \ 
5. Hurria, Baud. . . 
/ 6 . Bunjanus, Oppel. . . 
\ 7* Dendrophis, Fitz- J 
VI. Coluber, 
L 
8 . Dryinus , Merrem. 
S 
i 
9. Dryophis, Fitzing. . 
10. Oligodon, Bote.. 
11. Coluber, prop. ^ 
Cuv I 
Example of Species. 
Lacerta apoda, Pall. 
Ang. ventralis, L. Glass ser- 
pent 
A. fragilis, L. Common blind 
worm 
Ang. meleagris, L. Javelin 
snake, or Cape pintado snake 
Amph. alba, Lacep. 
T. braminus, Cuv. 
Anguis scytale, L. Whiplash 
snake 
U. Ceylanicus, Cuv. 
B. constrictor, L. the Boa 
constrictor 
S. coronata, Merr. 
E. anguiformis, Schn. 
E. tentaculatus, Lac. 
Col. Javanicus, Sh. Great ad- 
der of the Sunda Isles 
Col. cerberus, Daud. 
X. concolor, Reinw. 
H. nigricans, Beauv. Blackish 
pig-nosed serpent 
Col. hurriah, Russ, the Hur- 
riah of Bengal 
Col. buceplialus, Sh. 
Col. decorus, Sh. 
Col. nasutus, Russ. Sharp- 
nosed adder 
Col. fulgidus. Daud. 
Col. punctatus, Lat. Spotted 
adder 
Col. natrix, L. the Collared 
adder 
