AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
85 
convex transversely. In profile convex longitudinally, sutures deeply 
impressed. Pronotum strongly convex, dropping down in front. Mesonotum 
evenly convex. Epinotum short and straight at basal fourth, then inclined 
downward and backward, declivity four times longer than dorsum. Node 
thin, rather scale-like, twice as broad as long, oval. In profile slightly longer 
below than above, anterior face feebly convex, posterior face almost straight, 
inclined forward on top, dorsum feebly convex, fully half the length of 
posterior face. The ventral spine obsolete, tubercle-like. Postpetiole one- 
fourth broader than long, cone-shaped, sides feebly convex. First segment of 
gaster almost as long as broad, strongly convex behind. Constriction sharp 
and narrow. Legs robust. 
Alale. — (After Mayr). 
“Mas. : Long. 7,5 mm. E. scabri mari simillimus, sed minor, abdomine 
subtiliter et superficialiter transverse striato, segmento primo, praecipue 
dimidio antico, fortius striato.” 
Habitat. — Queensland : Rockhampton (type locality) ; widely distributed 
along the eastern coast from Brisbane to Cairns. 
Rhytidoponera convexa Mayr s.sp. rufescens Forel. 
(PI. VI, fig. 63.) 
Ectatomma (Rhytidoponera) convexum Mayr var. rufescens Forel, 
Ann. Soc. Ent. Belg., xliv, p. 58, 1900, ^ . 
Rhytidoponera (Rhytidoponera) convexa Mayr var. rufescens Emery, 
Gen. Ins., fasc. 118, p. 38, 1911, 
Worker. — Length, 7 5 mm. 
Brownish-red throughout, terminal segments of gaster very slightly darker. 
Mandibles and scapes very finely and densely striate longitudinally. Head 
coarsely and irregularly punctate-rugose, punctures shining at bottom. Thorax 
very finely and densely reticulate, with scattered large shallow punctures, 
epinotal declivity transversely striate. Top of node circularly and very finely 
striate. Postpetiole and first segment of gaster finely and densely striate, 
transversely arched. Legs densely reticulate. 
Hair yellow, long and erect on front of clypeus and apex of gaster, very 
short and sparse elsewhere. 
Head one-sixth longer than broad, sides and occipital border feebly convex, 
angles broadly rounded, no crest. Mandibles with numerous fine denticles. 
Clypeus sharply convex in front, broadly convex above. Frontal area large 
and shallow. Frontal carinae as long as broad in front. Scapes extend 
beyond occipital border by one-third their length. Second and third segments 
of funiculus equal in length, slightly longer than first. Eyes small and convex, 
placed behind the middle of sides. Thorax fully twice as long as broad. 
Pronotum one-third broader than long, sides, front and dorsum strongly 
convex. Pro-mesonotal suture sharply, but not deeply, impressed. Meso- 
notum one-third broader than long, strongly convex in all directions. Epi- 
notum strongly convex transversely. In profile forming an even arch from 
apex of pronotum to end of declivity, sutures feebly impressed. Node almost 
twice as broad as long, oval, strongly convex all ways. In profile slightly 
higher than long, longer at base than on top, anterior and posterior faces 
straight, dorsum convex, ventral spine short, thorn-like. Postpetiole one-fifth 
broader than long, cone-shaped in front. Constriction between postpetiole 
