A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 103 
between the dorsum and declivity feebly indicated. Node as long as broad, 
slightly broader behind than in front; in profile slightly longer than high, 
nearly flat above, anterior face vertical, posterior face descending in a gradual 
slope ; the stalk in front not quite half the length of node; postpetiole very slightly 
broader than long, much broader behind than in front. First segment of gaster 
as broad as long, slightly broader behind than in front. Legs moderately long 
and slender. 
Female. Length 11-13 mm. 
Resembles the worker, but much larger and winged. The sculpture slightly 
coarser on head, thorax and node. The colour similar, except that on two females 
examined the scutellum and sides of the mesonotum are brown or blackish. 
Male. Length 9 mm. 
Head and thorax yellowish-red; mandibles, antennae, nodes, gaster and legs 
testaceous, 
Head finely rugose, the rugae longitudinal, diverging outward behind. Mandibles 
smooth and shining. Pronotum, epinotum transversely rugose. Scutellum and 
mesonotum irregularly rugose; node circularly rugose. Postpetiole and gaster very 
finely and densely punctate, with a few large shallow punctures. 
Hair yellow, short and erect on head, thorax and nodes, longer and more 
abundant on gaster. Pubescence very abundant on gaster, whitish, short and 
adpressed. 
Head broader than long, strongly convex behind the eyes. Mandibles short, 
sharply pointed, furnished with one large sharp tooth midway between the point 
and inner angle, clypeus broadly rounded in front. Frontal carinae as long as broad 
behind, with a feeble median groove between them. Scape of antenna fully as 
broad as long, twice as long as first segment of funiculus, second segment three 
times as long as first. Thorax almost twice as long as broad. Pronotum short, 
sides and front strongly convex. Mesonotum as broad as long, mayrian and 
parapsidal furrows strongly impressed. Scutellum one-fourth broader than long. 
Epinotum twice as broad as long; in profile pronotum convex, raised abruptly, 
mesonotum raised and strongly convex, mayrian furrow deeply impressed. Scutellum 
dome-shaped ; epinotum convex to bottom of declivity. Node one-fifth broader than 
long, convex in all directions; in profile one-fourth longer than high, anterior face 
straight and vertical, dorsum feebly convex, rounded into posterior face, the ventral 
spine long and thorn-like. Postpetiole one and three-quarter times broader than 
long, sides convex. First segment of gaster much broader than long, broadest 
behind, sides strongly convex. Legs long and slender. 
Habitat—Victoria: Lake Hattah, Ouyen (J. E. Dixon) ; Mildura (Mrs. M. J. 
Zimmer) ; Sea Lake (J. C. Goudie) ; Wyperfield (J. Clark). 
South Australia: Murray Bridge (A. M. Lea). 
This species resembles P. picta Smith in size and colour. It is 
readily distinguished, however, by the form of the mandibles, 
antennae and nodes. 
Promyrmecia urens Lowne 
Plate XV, figs. 56-58 
Myrmecia urens Lowne, The Entomologist, Lond., ii, p. 336, 1865, &. 
Myrmecia pumilio Mayr, Verh. Zool. Bot. Ges. Wien, xvi, p. 896, 1866, ¥. 
Myrmecia picta Smith, Mayr, Jour. Mus. Godeffroy, xii, p. 94, 1876, ¥ ; 
Forel, Ann. Soc, Ent. Belg., xliv, p. 54, 1900, ¥. 
