6. Trigona apicalis ^HNS.

T. nigra; clypeo antennisque ferrugineis, parte dimidia basali alarum fusca, apice hyalino.

Worker. Length 2 1/2 lines. Head and thorax black; the abdomen nigro-piceous; the clypeus, and lower parts of the face, testaceousyellow; the mandibles ferruginous; antennae pale ferruginous; the head covered with cinereous pile. Thorax: the tegulae testaceous; the wings from the base to the stigma brown, beyond which they are hyaline; the scutellum covered with short stiff black hairs; the sides, and beneath, with scattered black pubescence; the legs dark rufopiceous; the posterior tibiae pale, flattened and widened towards their apex; the outer margin thickly fringed with black pubescence; the disk of the thorax with a cinereous pile; the apex of the abdomen pale rufo-testaceous.

Hab. Borneo (Sarawak).