AUSTRALIAN FORMICIDAE 
81 
Rhytidoponera harretti sp. nov. 
Plate XIII, Fig. 10. 
Worker, Length 10- 5-11 mm. 
Black; mandibles, apical half of funiculus and all the tarsi reddish brown. 
Mandibles strongly and evenly striate longitudinally. Head longitudinally 
striate-rugose, the rugae diverging strongly outward behind. Clypeus 
longitudinally striate. Scapes very finely striate longitudinally. Pronotum and 
mesonotum coarsely and irregularly rugose, spaces between rugae shining. 
Epinotum coarsely rugose transversely, some very fine transverse striae in 
front. Node more irregularly but finely rugose. Postpetiole finely and densely 
striate, the striae longitudinally arched. First segment of gaster finely and 
densely striate longitudinally, remainder of segments densely reticulate. 
Hair yellow, short and erect, abundant throughout, very short and suberect 
on scapes and legs. Pubescence yellow, apparent only on funiculus. 
Head one-sixth longer than broad, sides straight, almost parallel, occipital 
border very feebly concave, the angles broadly rounded. Mandibles broad, 
furnished with numerous very small sharp teeth. Clypeus convex in all 
directions. Frontal area small, triangular. Frontal carinae as long as broad 
in front. Scapes extend beyond occipital border by fully one-third of their 
length; second segment of funiculus one-third longer than first, third slightly 
shorter than second, remainder subequal, apical one-third longer than the 
preceding. Eyes small, globular, placed behind the middle of sides. Thorax 
one and three-quarters times longer than broad. Pronotum fully one-third 
broader than long, slightly compressed on sides, convex in front and above; 
pro-mesonotal suture sharply impressed. Mesonotum one-fourth broader than 
long, convex in all directions, meso-epinotal suture indistinct. Epinotum as 
long as broad ; in profile pronotum raised at an obtuse angle, flattened to basal 
fourth, then convex to base, there is a deep impression on sides, suture 
sharply defined. Mesonotum convex. Meso-epinotal suture indicated but not 
impressed. Epinotum evenly convex from base to foot of declivity. Node 
twice as broad as long, oval, convex transversely ; in profile twice as high as 
long, anterior and posterior faces straight and parallel, dorsum convex, ventral 
spine twice as long as broad at base, abruptly reduced and pointed in front. 
Postpetiole almost one-third broader than long, sides and front strongly 
convex; constriction deep and sharp. First segment of gaster one-seventh 
broader than long, broadest in front, sides convex. Legs long and robust. 
Habitat. — Central Australia : Harts Range (C. L. Barrett, July 1938). 
Near R. maniae Forel but larger and more robust. 
Rhytidoponera greavesi sp. nov. 
Plate XIII, Fig. 11. 
Worker. Length 11-12 mm. 
Bright ferriginous throughout. Mandibles and legs lighter. 
Mandibles very finely, superficially striate longitudinally with numerous 
large shallow punctures. Clypeus coarsely striate longitudinally. Head 
coarsely striate, transverse on the posterior third, longitudinal between frontal 
carinae then circling round the antennal fovea. Scapes very finely and densely 
striate longitudinally. Thorax transversely and coarsely striate. Node 
circularly striate. Legs smooth and shining, finely punctate, anterior coxae 
transversely striate. 
