258 
NATURAL HISTORY 
AMPHISBiENA. 
The Amphisbaena, or Double-headed Ser- 
pent, is remarkable for moving along with 
cither the head or the tail foremost; from 
which circumstance some have thought it 
has two heads. It has been affirmed that its 
bite is dangerous, but this must be a mistake, 
as it wants the fangs, and consequently the 
elaboratory that prepares the poison. The 
Amphisbaena is furnished, with a hard skin, 
somewhat of an earthy colour. They have 
sometimes been found in South America. 
