78. Formica arrogans ^HNS. B.M.

Worker. Length 4 lines.-Fusco-testaceous: mandibles black; the flagellum pale testaceous; the vertex deeply emarginate; the head more than twice the width of the thorax. Thorax compressed posteriorly; the legs pale rufo-testaceous; scale incrassate, rounded in front, truncated posteriorly. Abdomen ovate, the posterior margin of the segments pale rufo-testaceous.

Hab. Singapore.