Note 2 — CHAP. IX. FURTHER INFORMATION ON THE AMAZON ANTS.

“It is remarkable,” says Gould, “of common yellow and hill-settlements, (alluding to the nests of F. flava and F. rufa,) that you will find two sizes of workers in most of them, the larger exceed the less about one part in three; but there is no apparent difference as to contexture or other circumstances. They are mutually interspersed all over the colony, and carry on the same offices of labour and employment.” This observation of Gould is confirmed by specimens in the cabinet of Mr. Kirby. This gentleman informs us, that he saw them labouring in the colony, and that the large workers of F. rufa are nearly three times, and of F. flava twice the size of the small ones.—T.