36 
AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
RJiyticloponera mayri Emeiy 
(PL III, figs. 15-16.) 
Ectatomma (Rhytidoponera) mayri Emery, Bull. Soc. Ent., Italy, xv, 
p. 150, nota, 1883, . 
Ectatomma (Rhytidoponera) mayri Forel, Fauna Sudwest Austrl., i, 
p. 268, 1907, . 
Rhytidoponera (Rhytidoponera) mayri Emery, Gen. Insect., fasc., 118, 
p. 38, 1911, 
Worker. — Length, 12-13 mm. 
Blackish-brown. Mandible, funiculi and legs brown. 
Mandibles, scapes and tibiae finely striate longitudinally, clypeus coarsely 
rugose, somewhat longitudinally. Head coarsely punctate-rugose, the rugae 
longitudinal in middle, diverging outward behind. Thorax very coarsely 
punctate-rugose, the punctures shining at bottom, the rugae with a transverse 
direction on mesonotum and front half of pronotum. Node more finely 
punctate-rugose, the rugae circular. Postpetiole finely striate, longitudinally 
arched behind, more transverse in front. First segment of gaster very finely 
striate transversely. Both segments with very fine scattered punctures. 
Femora finely reticulate and with small scattered pimctures. 
Plair yellow, long and erect on front of clypeus and apical segments of 
gaster, very short and erect elsewhere, abundant throughout. Pubescence 
only on funiculi. 
Head one-sixth longer than broad, broadest in front, sides convex, occipital 
border slightly concave in middle, angles rounded, a weak crest from angles 
to near middle of border, interrupted by depression, slightly projecting 
forward. Mandibles feebly denticulate. Clypeus strongly convex above and 
in front. Frontal area large and deep, heart-shaped. Frontal carinae rather 
flat above, as long as broad in front. Scapes extend beyond occipital border 
by barely half their length. Second segment of funiculus one-sixth longer 
than first, third very slightly longer than first, apical shorter than the two 
preceding together. Eyes large and convex, placed behind the middle of 
sides. Thorax not twice as long as broad, pro-mesonotal suture sharply 
impressed, meso-epinotal suture indicated. Pronotum as long as broad, sides 
almost parallel, straight, dorsum feebly convex transversely. Mesonotum 
one-fourth broader than long, convex in all directions, bluntly pointed in 
front. Epinotum strongly convex transversely. In profile pronotum convex, 
sloping downward in front. Mesonotum convex, higher than epinotum, the 
latter straight on basal half then rounded into declivity, strongly convex, 
declivity as long as dorsum. Node one-third broader than long, almost 
straight behind, feebly convex, sides and front strongly convex. In profile 
the anterior and posterior faces high, vertical and parallel, the dorsum flat 
sloping slightly downward behind and rounded into posterior face, anterior 
edge sharp, the ventral spine long, straight and sharp. Postpetiole fully 
one-fourth broader than long, much reduced, or broadly cone-shaped in 
front. First segment of gaster one-fourth broader than long, strongly convex 
behind. The constriction between the two segments sharply marked but not 
deeply impressed. Legs long and robust. 
Male. — Length, 11-5 mm. 
Brown, antennae and legs lighter reddish-brown. Eyes black, ocelli 
yellow. Wings hyaline, with a slight yellowish tinge, veins brown. 
Mandibles finely striate longitudinally. Head and thorax coarsely punc- 
