117. Formica cognata. B.M. Worker major. Length 5 1/2 lines,-Extremely like F. maculata, which it may be; the antennae and head as in that species; the legs entirely ferruginous; the abdomen entirely black; in other respects the same as in F. maculata. Worker minor.-This insect differs from the small worker of F. maculata: the head is of a different form, being narrowed slightly behind the eyes, and is more sharply emarginate behind; the scale of the peduncle is more elongate and pointed at the apex; the abdomen entirely black, and the legs red. Notwithstanding the differences pointed out, this species will probably prove to be a variety of r. maculata. Hab. Port Natal.

Published as part of Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London :British Museum on page 35