100 A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 
Head as broad as long, sides strongly rounded into occipital border ; occipital 
border deeply indented, concave at middle. Mandibles one-third shorter than head, 
external border straight, inner border furnished with eight large sharp teeth, the 
eighth forming the basal angle, there is one strong tooth on basal border. Clypeus 
projecting strongly in front, angles sharp, deeply excised in middle, sides straight. 
Frontal carinae as long as broad behind. Scapes extend to posterior fourth of 
head ; first segment of funiculus one-fifth longer than second, remainder decreasing 
in length to apical which is barely as long as the two preceding combined. Thorax 
twice as long as broad. Pronotum fully twice as broad as long, strongly convex 
in front and on sides, flattened above. Mesonotum circular, very slightly broader 
than long. Scutellum small and narrow, no traces of wing stumps. Metanotum 
small and erect. Epinotum as long as broad, convex laterally. In profile the 
pronotum evenly arched from base to apex, mesonotum raised, highest in front, 
convex, scutellum and metanotum small, epinotum strongly convex from base to 
apex. Node as long as broad, circular, flattened on top, a weak longitudinal carina 
in the centre. In profile as high as long, anterior and posterior faces straight, 
vertical, both rounded into the feebly convex dorsum; the ventral spine broad, 
short and sharp-pointed. Postpetiole barely twice as broad as long, strongly convex 
in all directions. First segment of gaster broader than long, broadest behind, sides 
strongly convex. Legs long and robust. 
Worker and male unknown. 
Habitat—North Queensland: Mareeba (T. Greaves). 
The peculiar colour and seulpture render this species distinct 
from all the other known species. 
Promyrmecia picta Smith 
Plate XII, figs. 10-13 
Myrmecia picta Smith, Cat. Hym. Brit. Mus., vi, p. 146, 1858, %. Lowne, 
The Entomologist, Long., ii, p. 336, 1865, &. 
Myrmecia (Myrmecia) picta Smith, Emery, Genera Insect., fasc. 118, p. 21, 
1911. 
Myrmecia (Promyrmecia) picta Smith; Clark, Victorian Naturalist, xliv 
(2), p. 39, 1927, § 9? 6; Mem. Nat. Mus. Vict., viii, p. 11, pl. 1, figs. 
3, 4, 1934, ¥ 9 3. 
Worker, Length 9-12 mm. 
Black. Mandibles, clypeus, front of face, to about the posterior margin of eyes, 
yellow; antennae and anterior legs reddish-yellow; intermediate and posterior legs 
brownish; tarsi lighter. The colour of the thorax and nodes is most variable, 
ranging from all black on some specimens, to all red on others. The most numerous 
individuals have the head, behind the eyes, pronotum and a spot on mesonotum, 
black ; edges of mesonotum, all the epinotum, node and a greater portion of post- 
petiole red, or reddish-yellow. The gaster always black. 
Head longitudinally striate, finely and densely reticulate between the striae. 
Mandibles shining, with scattered elongate punctures. Pronotum transversely 
arched striate-rugose, in some specimens almost longitudinally arched. Mesonotum 
finely rugose transversely, on a few examples almost smooth. Epinotum trans- 
versely, often irregularly, rugose, definitely striate on declivity. Node irregularly 
rugose. Postpetiole and gaster very finely and densely punctate. 
Hair yellowish, erect, rather long and abundant throughout, none on scapes, 
longer and more abundant on apical segments of gaster than elsewhere. Pubescence 
