ANTS FROM THE OTWAY RANGES. 
Smooth, subnitid, microscopically punctate throughout. 
Hair yellow, very short, erect, longer on ventral surface of gaster, rather 
sparse throughout. Pubescence whitish very fine and adpressed, abundant 
throughout but not hiding the sculpture. 
Head slightly longer than broad, much broader behind than in front, sides 
convex, occipital border straight, angles strongly rounded. Mandibles fur- 
nished with nine to ten teeth, the first six or seven strong and sharp. Clypeus 
convex, anterior border straight and broad, with a somewhat truncate appear- 
ance. Frontal area elongate triangular. Frontal carinae flat, as long as 
broad. Scapes passing occipital border by almost one-fourth their length ; 
first segment of funiculus three times longer than broad, second to ninth longer 
than broad, tenth as broad as long, apical as long as two preceding together. 
Eyes circular, flat, placed at middle of sides. Thorax twice as long as broad. 
Sutures well defined. Pronotum one-third broader than long, strongly convex 
in all directions. Mesonotum as long as broad, sides almost parallel, strongly 
convex laterally. Epinotum as long as broad, parallel with mesonotum. In 
profile pronotum strongly and evenly convex, suture sharply impressed. 
Mesonotum straight, very low behind. Epinotum dome-shaped, almost half 
its length higher than mesonotum, declivity continuous with dorsal convexity. 
Node scale-like, convex transversely; in profile inclined slightly forward, 
anterior face convex, posterior face flat. Gaster ovate. Legs long and slender. 
Female. — Length, 7-8 mm. 
Colour and sculpture as in the worker. Pubescence more abundant. 
Head as long as broad. Eves and ocelli large. Scapes exceeding the occipital 
border by fully their thickness. Pronotum hardly visible from above. Meso- 
notum one-third broader than long, front and sides strongly convex, dorsum 
convex in all directions, parapsidal furrow sharply defined. Scutellum one- 
fifth broader than long, strongly convex behind. Epinotum almost twice as 
broad as long. Node fully twice as broad as long, convex in front. Gaster 
twice as long as broad. Legs slender. 
Habitat . — Beech Forest ; several small nests under stones. 
Much more robust than gracilis Lowne which it resembles. 
The structure of the head and node readily separate them. 
Iridomyrmex mattiroli Emery. 
Rend. Accad. Sc. Bologna, p. 238, fig. 8, 1897, 
Two nests of this species were obtained at Gellibrand. 
Iridomyrmex itinerans Lowne, 
The Entomol., London, 2, p. 278, § . 
Many examples were found on tree-trunks at Gellibrand. 
Iridomyrmex darwinianus For el. 
Ann. Mus. Hung. 5, p. 28, 1907, $ . 
Found at Beech Forest and Gellibrand but not common. 
The examples from Gellibrand appear to belong to the sub- 
species leae Forel but are certainly closer to the typical form. 
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