A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 139 
short, eight and one-half times longer than broad. Mesonotum slightly broader 
than long, broadly rounded in front, mayrian and parapsidal furrows deeply 
impressed. Scutellum one-third broader than long. Epinotum one-third broader 
than long ; in profile pronotum raised vertical, convex above, mesonotum raised 
convex in front, feebly convex on top, mayrian furrows deeply impressed. Scutellum 
high, dome-shaped. Epinotum straight, as long as declivity into which it is bluntly 
rounded. Node one-fourth broader than long, convex in all directions; in profile 
higher than long, anterior and posterior faces vertical, rounded into the feebly 
convex dorsum, ventral spine translucent, long and sharp, broad at base, postpetiole 
barely one-third broader than long, broadest at basal third. First segment of gaster 
slightly broader than long, broader behind than in front. Legs long and robust. 
Wings hyaline. 
Habitat—South Australia: Adelaide (type locality) ; Mt. Lofty (A. H. Elston). 
Western Australia: Emu Park (H. Reynolds); Perth; Mundaring ; Collie; 
Albany (J. Clark). 
Promyrmecia laevinodis sp. nov. 
Plate XVII, figs. 94, 95 
Worker. Length 11-14 mm. 
Black ; mandibles, antennae and legs reddish-brown. 
Shining. Mandibles finely striate longitudinally, with shallow, elongate punctures 
between the striae. Head finely striate longitudinally, interstices wide, with large, 
shallow punctures. Pronotum and mesonotum longitudinally striate, coarser than 
on head. Epinotum and node coarsely and irregularly rugose, declivity transversely 
striate. Postpetiole and gaster microscopically punctate; on some examples indica- 
tions of a few large punctures, very feeble and obsolete. 
Hair yellow, erect, rather sparse on head and thorax, longer and more abundant 
on postpetiole and gaster, short and suberect on legs. Pubescence white, very fine 
and adpressed, longer and more abundant on postpetiole and sides of gaster; on 
the dorsum of gaster it is bright, reddish-yellow, long, hiding the sculpture. 
Head one-seventh broader than long, sides feebly convex, occipital border 
straight or feebly concave, angles broadly rounded. Mandibles slightly longer than 
head, about half their breadth longer, external border straight at middle, convex 
at basal fourth, inner border furnished with five erect, sharp teeth on apical fourth, 
behind these the teeth obsolete, almost effaced. Scapes extend beyond occipital 
border by their thickness; first and third segments of funiculus equal in length, 
second one-fourth longer than first. Thorax fully twice as long as broad. Pronotum 
barely twice as broad as long, almost circular, dorsum flat. Epinotum as long as 
pronotum, one-third broader than long, oval; excision deep and narrow. Epinotum 
one and one-half times longer than broad; in profile evenly convex from apex of 
pronotum to base of mesonotum, excision deep, narrow at bottom; epinotum feebly 
convex in front, strongly convex into declivity behind. Node one-sixth broader 
than long, broader behind than in front, sides strongly convex, anterior and posterior 
borders feebly convex; in profile very slightly higher than long, anterior and 
posterior faces straight and vertical, rounded into the feebly convex dorsum, ventral 
spine triangular, half as long as broad at base, bluntly pointed. Postpetiole one- 
fourth broader than long, broadest at posterior fourth, constriction deep and wide. 
First segment of gaster slightly broader than long. Legs long and robust. 
Female. Length 15-16 mm. 
Colour and pilosity as on the worker. Sculpture much coarser. 
Head broader than long, occipital border feebly concave. Mandibles shorter 
than head, broad, external borders straight in middle, inner border convex, furnished 
