ANTS FROM THE OTWAY RANGES. 
sides. Ocelli present, but small. Thorax one and two-thirds longer than 
broad, sutures well defined. Pronotum almost twice as broad as long, strongly 
convex. Mesonotum almost one-fourth longer than broad, half as broad as 
pronotum, sides feebly convex. Epinotum one and one-half times broader 
than long ; in profile pronotum and mesonotum convex, latter somewhat 
higher. Epinotum much lower than mesonotum, straight, elevated behind, 
declivity face straight, at right angles to dorsum, two and a half times as long 
as dorsum. Node scale-like, concave transversely ; in profile the anterior face 
convex, posterior almost flat, a short broad projection below. Gaster one- 
fourth longer than broad. Legs slender. 
Habitat. — Gellibrand, in rotten logs. 
Prolasius pallidus, sp. nov. 
(PI. IV, fig. 26-27.) 
Worker. — Length, 2. 2-2. 8 mm. 
Pale ochraceous yellow ; gaster slightly darker. 
Hair yellow, short and erect, apparent only on clypeus and gaster. 
Pubescence yellow, very fine and adpressed, abundant throughout but not 
hiding the sculpture. 
Head very slightly longer than broad, sides and occipital border convex, 
latter with a feeble indention at middle. Mandibles triangular, furnished with 
four large sharp teeth and three smaller. Clypeus produced to a blunt point 
in front, not carinate. Frontal area transversely triangular. Frontal carinae 
short, parallel. Scapes extending beyond occipital border by one-fourth of 
their length ; first segment of funiculus slightly longer than two following, 
second and fourth as long as broad, third shortest, one-third broader than 
long, fifth to ninth longer than broad, tenth as long as broad, apical longer 
than two preceding together. Eyes moderately large and convex, placed at 
middle of sides. Ocelli small. Thorax one and two-thirds broader than long. 
Pronotum one-third broader than long, strongly convex ; pro-mesonotal suture 
sharply impressed. Mesonotum as long as broad, broader in front than 
behind, sides and dorsum convex. Epinotum as long as broad, sides feebly 
convex. In profile the pronotum and mesonotum form an almost even con- 
vexity, dorsum of epinotum straight and inclined upward behind, epinotal 
declivity straight, or feebly convex, almost at right angles to dorsum, twice 
as long as dorsum. Node scale-like, bluntly pointed above, convex transversely, 
anterior face convex, posterior almost flat. Gaster almost twice as long as 
broad. Legs slender. 
Female. — Length, 5.5 mm. 
Colour, 1 sculpture and pilosity as in the worker. Head slightly broader 
than long, sides feebly convex, occipital border feebly concave in middle, 
angles broadly rounded. Mandibles as in worker. Anterior two-thirds of 
clypeus carinate, produced somewhat tooth-like on the anterior border. Scapes 
extending beyond occipital border by one-fifth of their length. Eyes and 
ocelli large and convex. Thorax one and one-half times longer than broad. 
Pronotum hardly visible from above. Mesonotum one and one-half times 
broader than long, strongly convex in front ; parapsidal furrows fully half as 
long as dorsum, sharply impressed. Scutellum one-fourth broader than long, 
oval. Epinotum five times broader than long. Node with a slight excision 
On top edge. 
Habitat :— Beech Forest, under logs. 
[ 67 ] 
