84 
AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
segment of gaster one-fourth broader than long, strongly convex behind. The 
constriction broad but not deep. Legs long and robust. 
Male. — Length, 9'3-9 8 mm. (after Forel). 
“Auch grosser als der Arttypus mit schonem rotlichem Hinterleib. Der 
Petiolus ist etwas langlicher mit undeutlicherem Knoten und unten mit 
einem langern Dorn (auch beim. $5 ). Sonst wie der Arttypus.” 
Habitat. — North Queensland: Herberton (type locality) (E. Mjoberg) ; 
Mutchilba (A. D. Selby); Mareeba (H. E. Hill). Northern Territory. 
Birdum (C. Barrett). North Western Australia: Derby (J. G. Campbell). 
Redescribed from a co-type received from Prof. Sjostedt. 
Compared with a co-type of R. castanea Crawley, I can find 
nothing to separate them. 
Rlii/tidoponem convexa Mayr. 
(PI. VI, fig. 62.) 
Ectatomma conve.va Mayr, Jour. Mus. Godeffroy, xii, p. 92, 1876, ^ S . 
Rhytidoponera (Rhytidoponera) conve.va Emery, Gen. Ins., fasc. 118, 
p. 37, 1911, ^ . 
Rhytidoponera convexa Mayr race violacca For. var. suhumbrata 
Crawley, Ann. Mag. Nat. Hist., 9, ix, p. 434, 1922, ^ . 
Worker. — Length, 7' 5-8 mm. 
Blackish-brown. Mandibles antennae and legs brown. 
Mandibles, scapes and tibiae very finely striate longitudinally. Head 
coarsely punctate-rugose, the rugae longitudinal between frontal carinae, 
diverging outward behind, the punctures large, shallow and scattered, shining 
at bottom, interstices finely and densely reticulate. Thorax finely and densely 
reticulate-striate, anterior fourth of pronotum transversely striate with very 
few large obsolete punctures, rather spaced. Mesonotum with smaller, more 
numerous, shallow punctures. Epinotum transversely and finely rugose 
behind, with numerous obsolete punctures. Sides of thorax rather coarsely 
reticulate with a few very scattered shallow punctures. Node circularly 
striate above, anterior face shining and with some obsolete transverse striae. 
Gaster very finely and densely striate transversely arched, shining, the striae 
not sharp. Femora transversely striate-reticulate. , 
Hair yellow, long and erect on front of clypeus and ape.x of gaster, shorter 
and rather sparse on body, short and suberect on antennae and legs. 
Head fully one-fifth longer than broad, sides and occipital border feebly 
convex, angles broadly rounded, a fine sharp crest follows contour of border. 
Mandibles very finely denticulate. Clypeus strongly convex above, more 
broadly convex in front. Frontal area triangular, large and deep. Frontal 
carinae as long as broad in front. Scapes extend beyond occipital border by 
fully one-third of their length. First and third segments of funiculus equal 
in length, one-sixth shorter than second, apical twice as long as broad, much 
shorter than the two preceding together. Eyes convex, placed just in front 
of posterior third. Thorax twice as long as broad, pro-mesonotal suture 
sharply impressed, meso-epinotal suture indicated. Pronotum one-fourth 
broader than long, sides feebly convex, dorsum more strongly convex. 
Mesonotum fully one-fourth broader than long, weakly convex in front, 
strongly convex behind and on sides, dorsum and epinotum strongly 
