133. Formica ephippium ^HNS.

Worker. Length 3 lines.-Black: the pro- and mesothorax ferruginous above. Head oblong-quadrate, slightly nan-owed towards the mouth; the eyes placed high on the sides of the head; the antennae and mandibles ferruginous; the scape more or less fuscous; the clypeus with a central longitudinal carina; the mandibles serrated on their inner edge, with one or two stouter teeth at the apex. Thorax rounded in front and narrowed behind, the metathorax sometimes slightly ferruginous; legs elongate, the apical joints of the tarsi ferruginous. Abdomen small, ovate, covered with short pale yellow silky pubescence, interspersed with longer pale hairs; the head and thorax have also some scattered pale hairs; the scale of the peduncle subovate..

Hab . Adelaide. (Coll. F. Smith.)