66 
AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
tate, the punctures smaller and separated. Epinotum finely striate trans- 
versely in front, more rugose behind, a few widely separated shallow punctures 
in front more numerous and closer behind and on declivity. Node punctate- 
rugose on top, more finely striate in front. Postpetiole very finely and 
densely striate, transversely arched, with numerous, very small, shallow pili- 
gerous punctures. First segment of gaster similar, but the striae more or 
less obsolete. Femora finely reticulate with numerous small piligerous 
punctures. 
Hair yellow, long and erect on front of clypeus and apical margin of gaster 
segments, short and sparse on rest of body, adpressed on gaster, very short 
and suberect on antennae and legs. 
Head one-fifth longer than broad, convex, occipital border feebly concave 
in middle, angles strongly rounded. Mandibles furnished with strong sharp 
denticles, smaller behind than in front. Clypeus strongly convex in front 
and above. Frontal carinae as long as broad in front. Scapes extend beyond 
occipital border by fully one-third their length. First and third segments 
of funiculus equal length, slightly shorter than second, apical as long as the 
two preceding together. Eyes placed at posterior third of sides. Thorax 
twice as long as broad, pro-mesonotal suture strongly impressed, meso- 
epinotal suture weakly defined. Pronotum very slightly broader than long, 
sides and dorsum feebly convex. Mesonotum one-fourth broader than long, 
feebly convex and bluntly pointed in front, strongly convex behind and on 
sides and dorsum. Epinotum strongly convex transversely. In profile pro- 
mesonotal suture strongly impressed, meso-epinotal suture weakly impressed. 
Pronotum convex, sloping downward in front. Mesonotum convex. Epi- 
notum straight, slightly lower than mesonotum, strongly rounded into 
declivity behind. Node thin and scale-like, three times broader than long, 
anterior and posterior faces straight, sides and dorsum convex. In profile 
top portion thin, not as long as high behind, both faces straight and parallel, 
dorsum feebly convex, anterior face concave near bottom. Ventral spine 
long, slender and sharp, two and one-half times longer than broad at base. 
Postpetiole one-fourth broader than long, strongly convex on sides and in 
front. First segment of gaster one-fourth broader than long, very strongly 
convex behind. Constriction between the two segments broad and deep. 
Legs long and robust. 
M ale. — Unknown. 
Habitat. — South Australia: Mt. Lofty (F. E. Wilson, R. Blackwood); 
Adelaide. 
Bliytidoponera spatiata Forel. 
(PI. V, figs. 43-44.) 
Ectatomma (Rhytidoponera) convexmn Mayr var. spatiaturn Forel, 
Ann. Soc. Ent. Belg., xliv, p. 68, 1900, . 
Rhytidoponera (Rhytidoponera) convexa Mayr subsp. spatiata Forel, 
Emery, Gen. Ins., fasc. 118, p. 38, 1911, S 
Worker. — Length, 8-9 mm. 
Dark chocolate-brown. Mandibles, antennae and legs lighter brown. 
Mandibles and scapes very finely and densely striate longitudinally. 
Clypeus longitudinally rugose. Head very finely and densely reticulate- 
punctate, with numerous large shallow punctures, shining at bottom; longi- 
