19. Polyrhachis chaonia. P. niger, pube pallide aurea vestitus; thorace bidentata; petioli squamula bidentata; femoribus tibiisque fer-rugineis; alis fusco-hyalinis. Female. Length 4 lines. Black, and clothed with a cinereous pubescence, which has a pale golden lustre, particularly on the head and thorax; that on the abdomen is more inclining to grey, but has a golden tint in some lights; the mandibles black. Thorax armed in front with two short acute spines; the legs ferruginous, with the tarsi black; wings fusco-hyaline, nervures testaceous. Abdomen globose; the scale of the peduncle with two short stout spines. (Pl. I. fig. 18.) Hab. Gilolo.

Published as part of Smith, F., 1861, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace in the Islands of Ceram, Celebes, Ternate, and Gilolo., pp. 36-48 in Journal of the Proceedings of the Linnean Society of London, Zoology 6 on page 42