NEW AUSTRALIAN ANTS. 
Shining. Head and body with sparse, scattered, shallow piligerous punc- 
tures. Antennae and legs with finer and more abundant punctures. 
Hair yellow, tine and suberect, very sparse throughout. Pubescence 
yellowish, very tine and adpressed, apparent only on antennae and legs. 
Head one-fourth longer than broad, sides feebly convex, almost parallel, 
occipital border straight, angles strongly rounded. Mandibles almost half as 
long as head, narrow, gradually widening to the apex, terminal border short, 
furnished with two large sharp teeth and four or five more or less obsolete 
teeth, the first large one midway between apex of mandible and the second, 
the latter almost at centre of border ; an obsolete tooth between these large 
ones. Clypeus greatly produced and bluntly rounded in front, a strong carina 
on top extending on to frontal carinae, this carina in part grooved longitudinally. 
Frontal carinae narrow, extending back to middle of eyes. Scapes extending 
beyond occipital border by twice their thickness ; first segment of funiculus 
very slightly longer than second, the latter one and a half times longer than 
third, fourth longer than broad, the remainder as broad as long to the apical 
which is as long as the two preceding together. Eyes large, rather flat, placed 
at middle of sides. Thorax fully twice as long as broad. Pronotum almost 
one-fourth broader than long, sides and front convex. Mesonotum transverse, 
four times broader than long, both sutures feebly impressed. Epinotum 
narrow and convex laterally. In profile convex longitudinally, the declivity 
and dorsum of epinotum merged and convex. Node almost twice as long as 
broad behind, and twice as broad behind as in front, sides straight or feebly 
concave ; in profile slightly longer than high, one-third higher behind than in 
front, anterior face short and vertical, dorsum strongly convex, posterior face 
vertical, superior border rounded. Postpetiole bell-shaped, one-fourth broader 
than long, strongly convex ; a wide constriction between it and first segment 
of gaster, the latter almost twice as broad as long. Legs long and slender. 
Female. — Length, 8.5 mm. 
Colour, sculpture and pilosity as in the worker. Sides and occipital border 
more convex. Eyes slightly larger. Ocelli well developed. Mesonotum much 
larger. Scutellum and metanotum present but small. Node shorter and 
broader. Gaster much larger. 
Habitat. — N.S. Wales : Armidale (C. F. Deuquet). 
Leptogenys ( Lobopelta ) hackeri, sp. nov. 
(PI. II, fig. 20.) 
Worker. — Length, 10 mm. 
Head, thorax and node blue ; gaster black with a brownish tinge ; man- 
dibles, clypeus, antennae and legs castaneous. 
Mandibles shining, finely striate longitudinally and with scattered shallow 
punctures. Head and thorax finely rugose. Node finely and irregularly 
striate-rugose. Gaster smooth and shining with scattered piligerous punctures. 
Hair yellow, moderately long, suberect, abundant throughout, shorter and 
more adpressed on antennae and legs. Pubescence yellow, very short and 
adpressed on antennae and legs, not apparent on body. 
Head one-third longer than broad, broader in front than behind, sides 
convex, occipital border straight, sharply margined, angles bluntly rounded. 
[ 35 j 4 a 
