10. Myrmecia piliventris ^HNS.

Worker. Length 6 lines.-Black: the abdomen covered with pale golden pubescence; mandibles porrect, nearly straight, rounded above, longitudinally grooved beneath, somewhat obliquely truncate at the apex, the tip slightly bent, the inner edge with a few minute teeth directed backwards. The head longitudinally striated, the thorax very coarsely so, the striation on the metathorax transverse. Abdomen: the basal node coarsely rugose, with a longitudinal central carina beneath, terminating in a strong tooth at the base.

Hab. Australia. (Coll. F. Smith.)