48 OPHIDIANS. 
the arrangement of their buccal parts identical with those of 
the Crotalus horridus. 
Those not provided with fangs have the same parts iden- 
tical with those of the Elaps corallinus. 
Large snakes, the Pythonide for example, have very large 
and long fanglike teeth, in proportion to their size, but only 
the venomous varieties have the poison-bladder, or the appa- 
ratus for injecting it. Some naturalists have given drawings 
showing the shapes of the fangs and their attachments, in 
which the base of the fang is turned backwards. Of more 
than one thousand specimens examined carefully, and with 
scrutiny, in South America, I never have found a venomous 
snake whose fangs had the above shape; they are invariably 
attached on. the line of curvature of the fang, and their base 
never curves backwards. 
EIGHTEENTH GENUS—ELAPID. 
Divided into two species, viz. :* 
No. 1. Hajide, snakes with hoods; and 
2. H. elaps, snakes without hoods. 
( 1. Haja, the smaller variety. 
ar 2. Ophiophagus, is the largest poisonous 
snake known. 
First Species—Hasa. (Cobra di Capello.) 
Coluber Haja, Linn. Haja larvata, Cantor. 
Haja lutescens, Cantor. Haja atra, . 
Haja tripudians, Giinther ; Gray. Haja Kaouthiah, “ 
In Bengal, Cobras with the spectacle-mark are called Go- 
* Thanatophidia. 
