HONEY ANTS. 49 
different genera; and the former is a native of Mexico, 
while the one now described comes from Adelaide in 
Australia. The two species, therefore, cannot be de- 
scended one from the other ; and the conclusion seems 
inevitable that the modification has originated inde 
pendently in the two species. 
It is interesting that, although these specimens 
apparently never leave the nest, and have little use 
therefore for legs, mandibles, &c., the modifications 
which they have undergone seem almost confined to the 
abdominal portion of the cigestive organs. The head 
and thorax, antenne, jaws, legs, &c. differ but little 
from those of ordinary ants. 
