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I refer to this species, originally taken by Dr. Bequaert at Sankisia in the Katanga, numerous workers from two colonies, one taken by Mr. Lang at Banana, the other by Dr. Bequaert at Pasaconde near Zambi "in galleries under ground and in a fallen trunk of Hyphaene." The largest workers of the former colony are only 4 mm. long and therefore somewhat smaller than those seen by Forel (5 mm.) and the color is paler. They are probably not the largest workers of the colony. The largest individuals taken by Dr. Bequaert are fully 5 mm. long and darker in color. The head is deeply and broadly excavated behind and has straight, subparallel sides; the first funicular joint is distinctly longer than broad, the remaining joints, except the last, broader than long, and the petiole is also slightly broader than long. The whole body is evenly and sharply punctate, the punctures on the gaster somewhat smaller but very distinct. The large workers are rich ferruginous red, with somewhat paler gaster; the smaller workers are decidedly paler, like those taken by Mr. Lang at Banana.