NOTES ON AUSTRALIAN ANTS. 
border by one-fifth of their length ; first and second segments of funiculus 
equal, third somewhat shorter, apical as long as the two preceding together. 
Thorax twice as long as broad. Pronotum one and one-half times broader 
than long, broader in front than behind, slightly depressed above. Mesonotum 
almost circular, very slightly broader than long, convex and rounded above. 
Epinotum one and one-fifth times longer than broad ; in profile the dorsum 
and declivity appear as an even arch. Node circular, as broad as long and as 
broad in front as behind ; the stalk in front very short, barely one-third of the 
length of node ; in profile a little higher than long, rounded above, anterior 
and posterior faces vertical ; postpetiole one and one-half times broader than 
long, broadest at middle. First segment of gaster broader than long, and 
broader behind than in front. Legs moderately long. 
Female. — Length, 16-18 mm. (Ergatoid.) 
Colour identical with worker. Sculpture slightly coarser. Pilosity similar. 
Apart from the greater size and bulk it closely resembles the worker. The 
scutellum is very small and inconspicuous. The metanotum is indicated by a 
sharp ridge. There are no traces of wings, but the anterior wing sclerites are 
indicated. 
Male. — Length, 13-14 mm. 
Black. Antennal scapes and first segment of funiculus, femora of all legs, 
and anterior tibiae and apical segments of tarsi, red ; middle and posterior 
tibiae brownish. 
Mandibles shining, finely punctate. Head finely reticulate, coarser behind, 
with some large shallow punctures. Pronotum similar. Mesonotum similar 
in front. Epinotum with coarse reticulations forming faint transverse rugae. 
Node irregularly rugulose, with a strong longitudinal central carina. Post- 
petiole and gaster finely and densely punctate. 
Hair yellow, erect, long and abundant except on antennae and legs. 
Pubescence white, very fine, short and adpressed, particularly abundant on 
gaster. 
Head broader than long, broader in front than behind, sides strongly 
convex, occipital border short and straight. Mandibles short, not raised. 
Scapes fully twice as long as first segment of funiculus ; second segment four 
times as long as first. Eyes large, feebly convex, placed in front. Ocelli 
large. Pronotum short, strongly convex. Mesonotum convex in front, 
flattened behind, mayrian furrows distinct but not strongly impressed ; 
parapsidal furrows sharply defined. Scutellum strongly convex above, twice 
as broad as long. Epinotum twice as broad as long, strongly convex in all 
directions. Node slightly broader than long, sides strongly convex. First 
segment of gaster much broader behind than in front. Legs slender. Genitalia 
retracted. 
Habitat. — Victoria, Altona (J. E. Dixon, §); T. Greaves, § $ S ; J. 
Clark, § $) ; Bacchus Marsh and Coburg (C. Oke, $ ? ) ; Broadmeadows 
(F. P. Spry, §). 
All the females examined are similar to the worker and 
apart from their greater size are difficult to detect. Ergatoid 
females occur with several species of the genus, but winged 
forms also are known with the majority. 
