64. Formica callida ^HNS.

Worker. Length 3-5 lines.-Very variable in colour: some individuals are black, with the flagellum, legs, thorax beneath, scale of the peduncle, and base of the abdomen beneath more or less ferruginous; other individuals have the head, thorax, scale of the peduncle and legs pale ferruginous: the larger and smaller individuals also vary in the relative proportions of the head and thorax, but in all it is oblong-quadrate, with the angles rounded, wider than the thorax and emarginate behind; the clypeus with a longitudinal carina in the middle; a smooth abbreviated line between the antennae. Thorax compressed; legs elongate and slender. Abdomen ovate; the scale of the peduncle oblong, narrowed to its base, and rounded above.

Hab. India (Deccan). (Coll. East India House.)

Probably the worker of F. compressa ^HNS, being the small form of that species.