134. Formica nigro-aenea ^HNS. B.M.

Worker. Length 3 1/2 lines.-Black, with a green tinge. Head large, wider than the thorax, emarginate behind; the clypeus subcarinate, its anterior margin slightly notched in the middle; mandibles obscurely ferruginous, punctured and strongly dentate within. Thorax short, rounded in front, much narrowed behind, terminating almost in a point at the verge of the truncation of the metathorax; the apical joints of the tarsi obscurely rufo-piceous. Abdomen ovate, thinly covered with fine silky pale yellow pubescence 5 the margins of the segments thinly fringed with pale glittering yellow hairs, a few hairs of the same colour sprinkled over the head and thorax; scale subovate, small, rounded above.

Hab. Melbourne.