138. Formica consobrina ^HNS. B.M.

Formica consobrina, Erichs ^HNS. Wiegm. Arch. (1842) v. 258,228 [[worker]].

Hab. Tasmania.

Erichson described the female only of this species; the worker differs considerably in form and slightly in colour. The head and the abdomen, except the basal segment, black, otherwise pale ferruginous; the flagellum is also ferruginous; the head large, wider than the thorax, the latter rounded in front and much compressed posteriorly.