4. Formica familiaris ^HNS.

F. rufo-flava, lævis, nitida; alis subhyalinis, nervuris pallide testaceis; abdomine cinereo micante vestito.

Female. Length lines. Entirely of a pale reddish-yellow. Head: the sides behind the eyes straight; the posterior angles rounded, the hinder margin of the vertex slightly emarginate; the ocelli large and prominent; the clypeus and mandibles very smooth and shining, the latter with a row of black teeth on their inner margin. Thorax ovate, smooth and shining; wings subhyaline, the nervures pale testaceous, the discoidal cells obsolete. Abdomen wider than the thorax, covered with a thin, changeable, sericeous pile; the peduncle minute, obliquely inclined and fitting into a cavity at the base of the abdomen.

Hab. Makassar.

This insect bears a strong resemblance to F. flava ^HNS of Europe.