AUSTRALIAN SPECIES OF RHYTIDOPONERA AIAYR 73 
vex. Frontal area large and triangular. Frontal carinae rather flat above, as 
long as broad in front. Scapes extend beyond occipital border by one-third 
their length. First three segments of funiculus equal in length, apical barely 
as long as the two preceding together. Eyes behind the middle of the sides. 
Thorax fully twice as long as broad, pro-mesonotal suture sharply, but not 
deeply, impressed. Pronotum one-fifth longer than broad, sides straight, 
parallel, dorsum convex transversely. Mesonotum slightly broader than 
long, broadest in front, strongly convex. Epinotum strongly convex. In 
profile pronotum convex, dropping abruptly in front. Mesonotum convex. 
Epinotum convex to bottom of declivity, with no traces of a boundary between 
the two faces. Node oval, twice as broad as long, with a distinct longitudinal 
groove in middle. In profile high, subparallel, somewhat dome-shaped, 
anterior face convex, sloping forward below, dorsum strongly convex, 
rounded into anterior and posterior faces, the ventral spine long and very 
slender. Postpetiole one-fourth broader than long, strongly convex in front. 
First segment of gaster fully one-fourth broader than long; the constriction 
between the two segments deep and wide. Legs long and robust. 
Male unknown. 
Habitat. — Northern Territory. Alice Springs (type locality) (G. F. Hill, 
1913; C. Barrett, 1933.) 
RJiytidoponera malandensis Forel. 
(Plate VI, fig. 51.) 
Khytidoponera lacinosa Viehm. var. malandensis Forel, Arkiv. f. Zool., 
9, 16, p. 10, 1915, ^ 5 . 
IVarker. — 9-9-5 mm. 
Chocolate-brown, apical half of the funiculus and all the legs brownish- 
red. 
Mandibles, scapes and tibiae finely striate longitudinally. Head coarsely 
punctate-rugose, the rugae with a more or less longitudinal direction, antennal 
fovea finely reticulate-striate. Thorax and node coarsely punctate-rugose, 
the punctures large and deep, shining at bottom. Postpetiole coarsely punctate- 
rugose, the rugae with a distinct transversely arched direction. First segment 
of gaster very coarsely rugose, the rugae longitudinal. Femora transversely 
striate-reticulate. 
Hair yellow, long, erect and abundant throughout, slightly shorter on 
antennae and legs. 
Head one-eighth longer than broad, almost as broad behind as in front, 
sides evenly and feebly convex, occipital border straight, with a faint crest, 
angles strongly rounded. Mandibles with numerous very small sharp teeth, 
widely spaced. Clypeus strongly convex above and in front, bluntly pointed. 
Frontal area triangular, large and shallow. Frontal carinae as long as broad 
in front, slightly raised in front. Scapes extend beyond occipital border by 
fully one-third their length. Second and third segments of funiculus equal 
in length, one-fifth longer than first, apical longer than the two preceding 
together. Eyes placed just behind the middle of sides. Thorax twice as long 
as broad, pro-mesonotal suture sharply impressed. Pronotum barely as long 
as broad, broadest at middle, sides and dorsum strongly convex. Mesonotum 
and epinotum strongly convex transversely. In profile the pro-mesonotal 
suture sharply excised, no traces of a meso-epinotal suture. Pronotum 
strongly convex longitudinally, meso-epinotum straight, sloping downward 
p 
