11. Myrmecia nigriceps Mayr ^HNS. Reedy Hole; Bagot Creek and Alice Springs, one specimen from each; Avers Rock and Illamurta, several specimens from each.

This has been so determined by various entomologists until it was recognised by Wheeler, who described the worker as Myrmecia vindex Smith var. desertorum ^HNS {Trans. Roy. Soc. S. Ausi., xxxix, p. 805, 1915). On examining large series, including the sexes, from various parts of Central and Western Australia, I raised it to the rank of species, Myrmecia desertorum Wheeler ^HNS (Clark, Vie. Naturalist, xlii, p. 143, 1925, [worker, queen, male]).