12. Atta penetrans ^HNS. B.M.

Female. Length 4 lines. -Head and thorax black and shining, abdomen dark rufo-piceous. Head longitudinally striated; the mouth, clypeus and antennae ferruginous. Thorax elongateovate; the prothorax in front and the legs ferruginous, the striae on the disk intermixed with oblong punctures, a smooth impunctate line in the middle of the thorax in front; the metathorax truncate, the truncation smooth and shining; the wings subhyaline, with a fuscous line along the costal nervure, the apical margins of the wings with a fringe of fine white hairs. Abdomen; the apical margins of the segments rufo-piceous, the nodes of the peduncle globose and punctured.

Hab . Borneo (Sarawak). (Coll. A. R. Wallace.)