A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 97 
The sculpture is larger and coarser, the head and node differently 
shaped, the pubescence much more abundant. In both the post- 
petiole and gaster have fine microscopic punctures often obscured 
by pubescence, both segments are more shining in froggatti than 
in aberrans. The clypeus is much more excised and the clypeal 
projections more outwardly directed in froggatti, and the labrum 
shorter and narrower, nearly square, not rounded as in aberrans. 
Promyrmecia nobilis sp. nov 
Plate XII, figs. 2-4 
Myrmecia (Promyrmecia) aberrans Forel, Clark, Victorian Naturalist, 
xlii (6), p. 136, 140, 1925, ¥. Wheeler, Colony-founding among Ants, 
p. 50, 1933, ¥. Clark, Mem. Nat. Mus. Vict., viii, p. 9, pl. 1, figs. 1, 2, 
1934, § 292. 
Worker. Length 10-14 mm. 
Black; top of pronotum, mesonotum, epinotum and node, red; mandibles and 
labrum yellowish-red, points of teeth black; antennae and tarsi brownish. Some 
examples have a reddish tinge on lateral borders of the head behind. 
Shining. Head longitudinally striate in middle, the striae between frontal 
carinae continued from front of clypeus to occipital border; sides of clypeus and 
antennal depressions not striate, but finely and densely punctate, these fine punc- 
tures continued between the striae on head; some large scattered punctures on 
occipital border. Pronotum longitudinally striate in middle, longitudinally arched 
at sides above: mesonotum smooth and shining, with some scattered shallow 
punctures; there are faint traces of fine longitudinal striae on some examples. 
Epinotum coarsely striate transversely, descending obliquely on the sides; node 
circularly striate, with a central longitudinal carina; postpetiole, gaster, scapes and 
legs very finely and densely punctate. 
Hair yellowish, sparse on head and body, more abundant on the apical segments 
of gaster, but short and erect; shorter and adpressed on the tibia and tarsi, tibia 
also furnished with some long bristle-like hairs on the underside. Pubescence 
greyish, very fine and adpressed on clypeus and funiculus; more abundant on 
postpetiole and gaster, shorter and finer on sides of thorax. 
Head very slightly broader than long, broader behind than in front, occipital 
border concave, angles broadly rounded. Mandibles short and broad, not as long 
as head, external border feebly concave at middle; inner border nearly straight to 
basal third, thence strongly reduced to base; furnished with twelve teeth, first 
two small, third, fifth, seventh, eighth, tenth and eleventh strong and obtuse; the 
tenth forms the angle between the two apparent borders. Frontal carinae short, 
extending to about the posterior third of eyes. Clypeus strongly excised at middle 
in front, the excision obtuse, sides straight, forming a sharp tooth-like projection 
on each side. Labrum sharply rounded, projecting outward almost to the points 
of clypeus. Scapes not extending to occipital border by one-fifth their length; 
first and second segments of funiculus equal, third somewhat shorter, apical as 
long as the two preceding combined. 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 
