62 
AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
gaster very finely and densely punctate-reticulate, with some large shallow 
scattered punctures. Antennae and legs very delicately reticulate. 
Hair yellow, long and erect on clypeus and apical margin of gaster seg- 
ments. Very short and adpressed on antennae and legs. 
Head one-eighth longer than broad, strongly convex behind. Mandibles 
with numerous sharp denticles. Clypeus broadly convex in front and above. 
Frontal carinae as long as broad in front, with a median distinct longitudinal 
ridge extending from clypeus to anterior ocellus. Second segment of funi- 
culus almost two-thirds longer than scape, first segment as long as broad. 
Eyes large and convex, occupying fully one-third of sides. Ocelli large and 
convex, anterior margin of posterior ocelli level with posterior margin of 
eyes. Thorax barely twice as long as broad. Pronotum not visible from 
above. Mesonotum almost one-third broader than long, broadly cone-shaped 
in front, feebly convex behind, mayrian furrows sharply and deeply impressed, 
parapsiclal furrows sharply impressed, a strong longitudinal groove on the 
anterior fourth. Scutellum almost one-fourth broader than long, convex all 
ways. Epinotum flat in front, convex transversely behind. In profile pro- 
mesonotal suture deeply impressed, pronotum erect and convex. Mesonotum 
erect and strongly convex in front. Scutellum fully twice as long as high, 
dome-shaped. Metanotum bluntly pointed. Epinotum convex on top, rounded 
into declivity without traces of a boundary, declivity straight at an acute 
angle. Node not distinct from above, wider behind than in front. In profile 
very feebly convex, and very little higher than stalk behind, sloping gradually 
downward in front, the ventral spine short and tubercle-like. Postpetiole 
one-sixth broader than long, cone-shaped in front, sides feebly convex. First 
segment of gaster fully one-fourth broader than long, one-seventh broader 
behind than in front, sides convex, the constriction between tbe two segments 
narrow and deep. Genitalia retracted. Legs long and slender. 
Habitat. — Western Australia-. Rottnest Island (W. FI. Mathews, L. 
Glauert). 
Rhytidoponem micans sp. iiov, 
(PI. V, figs. 40-41.) 
Worker. — Length, 8 mm. 
Dark chocolate-brown, almost blackish-brown, edges of mandibles, apical 
segments of funiculi and the tarsi reddish. 
Mandibles, scapes and tibiae very densely and delicately striate longitudi- 
nally. Clypeus finely punctate-rugose, the rugae longitudinal, the punctures 
shining at bottom. Head very finely and densely striate, longitudinally 
between frontal carinae, diverging outward behind the eyes, some transverse 
striae on occiput, antennal fovae and cheeks very finely and very densely 
reticulate, without striae, the same dense reticulation extends all over the 
head between the striae, some small shallow scattered punctures over head 
more abundant on cheeks. Sculpture of thorax similar to head, the striae 
circular on pronotum, transverse on neck, transverse on mesonotum and 
epinotum, much coarser on declivity, the larger punctures very sparse and 
shallow. Node irregularly striate-reticulate with a few shallow punctures. 
Both segments of gaster very delicately striate transversely with numerous 
very small piligerous punctures. Femora transversely striate-reticulate. 
