NOTES ON AUSTRALIAN ANTS. 
Differs from the worker only by larger size and in possessing wings. The 
colour appears to be more constant. In all the examples examined the occiput, 
pronotum, margins of the other segments and gaster are blackish ; the 
mesonotum, scutellum, epinotum, node and postpetiole red. All the legs are 
uniformly castaneous, except the apical half of posterior femora, which are 
brown. Front of face bright yellow. Four corners of node more clearly 
defined, but not sharp. Wings hyaline. Ergatoid females also are present. 
Male. — Length, 10-11 mm. 
Black ; mandibles, five basal segments of antennae, front of face and all 
the legs, yellow ; eight apical segments of antennae, brown. 
Head finely striate-rugose on middle, becoming coarser at lateral and 
occipital borders. Mandibles shining, coarsely and sparsely punctate. Pro- 
notum, scutellum, mesonotum and epinotum coarsely reticulate-punctate. 
Node coarsely and irregularly rugose. Postpetiole and gaster very finely and 
densely punctate. 
Hair greyish, long and suberect, longer and more abundant on head and 
thorax than on gaster, short and adpressed on legs, none on antennae. 
Pubescence greyish, short, most abundant on gaster. 
Head broader than long, broader in front than behind ; occipital border 
convex. Mandibles short, triangular, external border convex ; diverging 
behind. Clypeus long, convex and rounded above, concave at middle in 
front. Antennae long and slender ; scapes short ; first segment of funiculus 
half as long as scapes, second three and one-half times as long as scape, third 
slightly shorter than second, the others about equal. Thorax barely twice 
as long as broad. Pronotum strongly rounded in front and above. Mesonotum 
large, convex and rounded above, mayrian furrows distinct ; a deep longitu- 
dinal suture extends from anterior border to near base ; parapsidal furrows 
faintly defined. Scutellum broad, strongly convex. Epinotum strongly 
convex and rounded above, without a boundary between the dorsum and 
declivity. Node slightly broader than long, almost circular, strongly convex 
above. Postpetiole broader than long, broadest just behind the middle, 
strongly convex above and on sides. First segment of gaster broader than 
long. Pygidium convex and rounded. Cerci long and pointed. Genital 
armature ; annular lamina short, about one-third of the length of squamulae, 
latter slightly longer than broad, broader behind than in front, sides evenly 
convex ; in profile strongly convex and rounded above. Stipites long and 
bluntly pointed, curved inward and slightly upward at the point. Volsella 
long, laminate, pointed at tip. Lacinia short, laminate. Sagittae long 
thickened towards apex. Straight above to near apex then curved upward ; 
apical face vertical, rounded above and below, with a row of small, sharp teeth 
at lower third, directed downward. Subgenital lamina one and one-fourth 
times longer than broad at base, strongly reduced from basal third to apex ; 
this feebly concave, nearly straight, without a projection at middle in front. 
Stipites, apex of squamulae and of subgenital lamina, punctate. Hair yellow- 
ish, erect, long and pointed on stipites and subgenital lamina, shorter and 
suberect on squamulae. Legs long and stout. 
Habitat. — Western Australia : Merriden (L. J. Newman), National Park 
and Mundaring (J. Clark), Yellowdine (W. Joyce). South Australia : Mt. Lofty 
(A. H. Elston). Victoria : Maldon (J. C. Goudie), Mallee (J. E. Dixon), 
Wyperfield (J. Clark). New South Wales: Broken Hill (F. W. Shepherd), 
Narrabri (W. W. Froggatt). 
