34 TiMEHRI. 
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forms, but the green Labarria (Lachesis bilineatus) is an 
arboreal species with prehensile tail. The body is uni- 
formly green or spotted and speckled with black, and is 
marked on the outer scales with a yellow lateral line or 
series of spots. The end of the tail is red. 
This species, which reaches a length of from 3 to 4 
feet, does not appear to be common, or it well may be 
that it is not frequently observed owing to its green 
colour ; and there are consequently but few cases of its 
being taken. Several green and harmless Colubrines, 
and even the green boa, are generally mistaken for it, 
and they all appear to be designated " parrot" snakes 
on account of their colour. The finely-scaled head 
with raised anterior edges, the loreal pit, the viperine 
fangs, and the other crotaline chara6lers, however, will 
easily serve to distinguish it. 
The remaining venomous species all belong to the 
genus Elaps, which is the American representative of 
that se6lion of the Colubrina to which the Cobra and 
the greater number of the Eastern venomous serpents 
belong. In them the anterior maxillary teeth are per- 
forated fangs which are permanently ere6l, the jaw not 
hinging on the skull as in the viperine snakes. 
As already stated, only one of these species, the largest, 
Elaps surinamensiSy is really to be dreaded. In the colony 
it goes by the common name *' Himeralli," and attains a 
length of six feet. They are found along the waterside 
on the great rivers and along the sheltered creeks ; and 
are thus not easily secured. 
The species will readily be recognised by its red colour, 
and by the black and yellow rings, the black being ar- 
ranged in threes, with the central one very broad in 
