AUSTRALIAN FORMICIDAE 
85 
plate-like process with a transparent puncture behind. Postpetiole one-sixth 
broader than long, sides and front convex. First segment of gaster very slightly 
broader than long, sides convex. Legs long and slender. 
Male and female unknown. 
Habitat. — South Australia: Ooldea (J. A. Kershaw, July 1921). 
The colour and shape of the thorax separate this from all 
other known forms. 
Chalcoponera JiilU sp. nov. 
Plate XIII, Fig. 15. 
Worker. Length 5 -5-6 mm. 
Head, thorax, node and gaster brown, mandibles, antennae and legs reddish 
brown. 
Mandibles finely striate longitudinally. Clypeus longitudinally rugose, with 
some shallow scattered punctures. Head longitudinally punctate-rugose, the 
rugae diverging outward behind. Scapes finely and densely striate longi- 
tudinally. Pronotum and mesonotum coarsely punctate- rugose, the punctures 
large and deep, shining at the bottom. Epinotum transversely rugose, the 
punctures small. Node irregularly punctate-rugose, almost as on epinotum. 
Postpetiole strongly striate transversely, the striate arched at posterior fourth, 
with some scattered obsolete punctures. First segment of gaster more finely 
and densely striate transversely. 
Hair yellow, long and erect, abundant throughout, shorter and suberect on 
antennae and legs. No pubescence. 
Head one-fifth longer than broad, sides convex, occipital border straight, 
angles sharply rounded, a feeble crest extends along the border. Mandibles 
large and broad, furnished with numerous small sharp teeth. Clypeus broadly 
convex above and in front. Frontal area large and triangular. Frontal carinae 
as long as broad in front. Scapes extend beyond occipital border by barely 
twice their thickness; first to tenth segments of funiculus equal in length, 
gradually increasing in thickness, apical as long as the two preceding combined. 
Eyes small, globular, placed at middle of sides. Thorax one and one-half 
times longer than broad, pro-mesonotal suture sharply impressed, meso- 
epinotal suture feebly indicated. Pronotum fully one-third broader than long, 
sides and front convex, very feebly convex transversely, Mesonotum three- 
fifths broader than long, convex in all directions. Epinotum almost twice as 
broad as long, strongly convex transversely; in profile pronotum raised 
abruptly, strongly convex to base. Mesonotum flatly convex, both sutures 
distinct. Epinotum one-third longer than declivity, feebly convex, declivity 
straight rounded into dorsum. Node almost one-third broader than long, 
sides and front strongly convex, feebly convex behind ; in profile higher than 
long, anterior and posterior faces vertical, straight and parallel, dorsum 
slightly longer than posterior face, feebly convex, angles sharply rounded. 
Ventral process large and plate-like, one-third longer than broad, with a large 
transparent puncture in centre and a long sharp spine in front directed 
backw'ard. Postpetiole one-third broader than long, strongly convex in front, 
weakly convex on sides, constriction deep and wide. First segment of gaster 
as long as broad, strong convex behind. Legs robust. 
Male and female unknown. 
Habitat. — North Queensland: Palm Island (G. F. Hill). 
