124. Formica? erythrocephala ^HNS. B.M.

Formica erythrocephala, Fabr. ^HNS Ent. Syst. ii. 351. 6.

Atta erythrocephala, Fabr. ^HNS Syst. Piez. 423. 5.

Hab. New Holland.

The typical specimen of the species is in the Banksian Collection; it is a very slender, attenuated form of a worker ant; the head is a little wider than the prothorax, elongate, and of a bloodred colour; the antennae red, with the scape obscurely so; the mandibles porrect and finely denticulate on their inner edge. Thorax elongate, narrowed towards the head; the legs elongate, slender, and with the knees and tarsi red. The abdomen small, ovate, and subpetiolate; the scale of the peduncle small, incrassate, rounded in front, and truncate behind.