ANTS FROM THE OTWAY RANGES. 
long as broad and longer than the two preceding together. Eyes small, 
situated at the anterior third of head. Thorax twice as long as broad. Pro- 
notum one-third broader than long, strongly convex. Mesonotum one-fourth 
broader than long. Epinotum slightly broader than long ; in profile feebly 
convex longitudinally, the sutures feebly impressed, the declivity abrupt, as 
long as dorsum of epinotum, the lateral and superior borders bluntly margined. 
Node three times as broad as long, convex in front, flattened behind, in profile 
fwice as long at the base as above, the anterior face vertical ; there is a long 
broad projection in front below, longer than top of node, the corners sharp. 
Postpetiole fully one-third broader than long, truncate in front, sides and 
anterior border convex. First segment of gaster one-fourth broader than 
long, as broad in front as behind. Legs slender. 
Female. — Length, 3.5 mm. 
Colour, sculpture and pilosity as in the worker. Larger and more robust. 
Head larger, broader behind than in front. Eyes and ocelli large. Teeth of 
mandibles somewhat finer. Parapsidal furrows well defined. Node thinner 
above, more scale-like. Wings missing. 
Ergatoid female. — Length, 3 mm: 
Exactly midway between the worker and female. The eyes are smaller 
and more flattened than in the female, ocelli also much smaller. Thorax as 
in worker, but scutellum and metanotum developed. There are no traces of 
wing pads. 
Habitat. — Turton’s Track, Otway Range. 
Near P. sulciceps Clark but readily distinguished by the 
shape of the node. 
Ponera decora, sp. nov. 
(PI. IV, fig. 12-13.) 
Worker. — Length, 2. 8-3.4 mm. 
Ochraceous tawny ; first segment of gaster infuscated, brownish. 
Shining, very finely and densely punctate. 
Hair yellow, long and erect, not abundant except on gaster. Pubescence 
yellow, fine and adpressed, abundant throughout. 
Head one-fifth longer than broad, very slightly broader behind than in 
front, sides strongly convex, occipital border straight, angles rounded. Man- 
dibles half as long as head, terminal border furnished with eight teeth. Clypeus 
feebly carinate, produced and convex in front. F'rontal carinae lobe-like, 
separated by a narrow, feeble, short groove which hardly extends beyond 
carinae. Scapes extending beyond occipital border by fully their thickness ; 
first segment of funiculus as long as three following, apical segment fully twice 
as long as broad and as long as the three preceding together. Eyes moderately 
large, flat, placed about five times their width from the anterior border of side 
of head. 1 horax twice as long as broad. Pronotum one-third broader than 
long, strongly convex in front and on sides. Mesonotum slightly broader than 
long, almost circular, both sutures strongly impressed. Epinotum narrow on 
top, twice as long as broad, and twice as broad behind as in front. In profile 
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