78 
AUSTRALIAN FORMICIDAE 
Smooth and shining; very finely and densely reticulate; mandibles with a 
few large shallow punctures, obsolete near base ; head, thorax and gaster with 
small scattered piligerous punctures, very sparse throughout. 
Hair yellow, long and erect and abundant on apical segments of gaster, 
shorter and sparse elsewhere, strong and bristle-like on scapes, very short 
and adpressed on funiculi and legs. Pubescence nil. 
Head as long as broad, sides convex, occipital border short, straight or very 
feebly convex, angles rounded. Mandibles edentate, edges sharp. Clypeus 
very short, vertical. Frontal carinae erect, converging slightly, and truncate 
behind, one-third longer than broad in front. Carinae of cheeks short, 
prominent in front, obsolete behind, hardly extending beyond frontal carinae 
behind. Eyes large and convex, placed at middle of sides. Ocelli large and 
prominent. Scapes extend beyond posterior margin of eyes by barely their 
thickness; first to fourth segments of funiculus as long as broad, fifth to 
seventh very slightly broader than long, eighth to tenth as long as broad, 
apical pointed, as long as the two preceding combined. Thorax barely twice 
as long as broad, very strongly constricted at mesonotal region. Pronotum 
almost one-third broader than long, sides and front convex and sharply 
margined, margins stop abruptly at pro-mesonotal suture. Mesonotum as 
long as broad, sutures feebly indicated, sides not margined. Epinotum 
one-third broader than long, sides convex, strongly margined, posterior 
straight, margined, angles sharp; in profile dorsum convex longitudinally, 
anterior border of pronotum short and truncate, epinotal declivity at an obtuse 
angle, half as long as dorsum from which it is separated by a sharp ridge, 
sides not margined. Node slightly broader than long, one-fifth broader behind 
than in front, sides convex and sharply margined, anterior border concave, 
the angles sharply produced in front, posterior angles produced backward and 
slightly inward at points, as long as broad at base ; in profile one-fifth longer 
than high, anterior face vertical, sharply margined, dorsum feebly convex, 
anterior edge sharp, not produced, posterior greatly produced backward, 
sharply pointed, twice as long as broad at base. Postpetiole one-third broader 
than long, much broader behind than in front, sides convex, anterior border 
straight, sharply margined, the angles sharp, the margins extend along the 
anterior third of sides. First segment of gaster one-third broader than long, 
broader behind than in front, sides convex. Legs long and robust. 
Male. Length 7 2 mm. 
Colour lighter than in worker, back of head and a large Y shaped patch 
on mesonotum yellow. Wings translucent, veins brown. 
Sculpture and pilosity as in the worker. 
Head fully one-fourth broader than long, broadly arched from the eyes 
behind. Mandibles large, feebly dentate. Frontal carinae erect, parallel, 
diverging slightly outward behind limiting the antennal fovea. Eyes very 
large occupying almost all the sides. Ocelli large and convex. Scapes extend 
back level with the middle of the eyes ; second segment of funiculus twice as 
long as first, remainder longer than broad, apical sharp pointed, longer than 
the two preceding combined. Thorax almost twice as long as broad. Pronotum 
hardly seen from above, strongly convex in all directions. Mesonotum very 
slightly broader than long, parapsidal furrows strongly impressed, mayrian 
furrows feebly impressed. Scutellum one and one-half times broader than 
long, oval. Epinotum almost twice as broad as long, posterior border straight ; 
in profile pronotum vertical, mesonotum strongly convex in front, feebly 
convex at middle, scutellum twice as long as high, convex, epinotum straight, 
highest in front, declivity feebly concave, slightly shorter than dorsum from 
