76 
AUSTRALIAN FORMICIDAE 
straight, at an obtuse angle, sides sharply margined. Node one-fifth broader 
than long, broadest at middle, sides convex, strongly margined, anterior border 
concave, sharply produced, posterior angles produced backwards as short 
broad spines as long as broad at base; in profile anterior face convex, high, 
superior angle sharp, dorsum convex the margin almost straight, the angle 
behind produced upward and backward as a thin sharp spine. Postpetiole 
one-third broader than long, broadest behind, sides and front almost straight, 
feebly convex, angles rounded ; constriction deep and wide. First segment of 
gaster one-fourth broader than long, sides strongly convex. Legs long and 
robust. 
Female. Length 5 2 mm. (Ergatoid), 
Larger and more robust than the worker. Colour, sculpture and pilosity 
similar. Ocelli prominent. Thoracic segments indicated but weakly developed, 
mesonotum and scutellum small. Node broader, one-third broader than long. 
Legs more robust. 
Habitat. — Victoria: Patho (H. A. Potter). 
A small colony was found whilst they were raiding the 
nest of a small black ant. 
Genus NEOPHYRACACES gen. nov. 
Worker. Antennae with twelve segments, apical segment large, as long as 
or longer than the two preceding combined. Eyes and ocelli large. Thorax 
and node strongly margined. 
Female. Similar to the worker; winged or ergatoid. 
Male. Similar to the male of Phyracaces. 
Genotype Phyracaces clams Clark. 
Separated from Phyracaces by the workers possessing 
ocelli. 
Neophyracaces potteri sp. nov. 
Plate XIII, Pigs. 4, 5. 
Worker. Length 7-7 5 mm. 
Bright reddish yellow throughout; the eyes, margins of the thorax and 
node black. 
Smooth and shining, with scattered shallow piligerous punctures. Front of 
head and apical margins of segments of gaster microscopically reticulate. 
Hair yellow, long, erect and abundant throughout, shorter and suberect on 
antennae and legs. Pubescence confined to apical segments of antennae, very 
fine, short and adpressed. 
Head as long as broad, sides strongly convex, posterior angles broadly 
rounded, occipital border short and straight. Mandibles with numerous small 
fine teeth. Clypeus very short. Frontal carinae short and erect, parallel in 
front, truncate and converging behind, twice as long as broad. Carinae of 
cheeks prominent extending backward level with anterior margin of eyes. 
Eyes rather flatly convex, placed at the middle of sides. Ocelli large and 
prominent. Scapes extend backward to posterior margin of eyes ; first segment 
of funiculus as long as broad, second to eleventh broader than long, apical 
pointed, as long as the three preceding combined. Thorax one and three- 
fourths times longer than broad, as broad behind as in front, strongly 
constricted at the mesonotal region, sutures feebly defined; pronotum much 
broader than long, sides and front strongly convex, the sides sharply margined. 
