70. Formica ventralis ^HNS. B.M.

Female. Length 6 lines.-Black: the flagellum, mandibles, anterior margin of the face, and the head behind more or less ferruginous; the thorax and base of the abdomen pale rufo-testaceous, the coxae and femora of the same colour; the posterior margins of the first, second and third segments of the abdomen pale rufo-testaceous; the scale of the peduncle pale, with its upper margin rounded and entire; wings hyaline, the superior pair yellowish along their anterior margin, the nervures pale rufo-testaceous.

Hab . Ceylon.