174. Formica morosa ^HNS. B.M.

Worker. Length 3 lines.-Opake black; the flagellum ferruginous with the apex black. Head elongate, eyes ovate, placed rather high on the sides of the head; the mandibles ferruginous, the clypeus with a central longitudinal carina, the head rounded behind. Thorax not quite so wide as the head, much compressed posteriorly; legs elongate, with the apical joints of the tarsi obscurely ferruginous. Abdomen elongate-ovate, the apical margins of the segments with a few glittering white hairs.

Hab . Chili.