AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
65 
Head very slightly longer than broad, sides feebly convex, occipital border 
straight or feebly concave, angles rounded, no traces of a crest. Mandibles 
with numerous small sharp teeth. Clypeus sharply convex in front, flatly 
convex above. Frontal area triangular, deep. Frontal carinae barely as 
long as broad in front. Scapes extend beyond occipital border by almost 
half their length ; second and third segments of funiculus equal in length, 
very slightly longer than first, apical segment not as long as the two preceding 
together. Eyes large and projecting, placed at posterior third of sides of head. 
Thorax fully twice as long as broad. Pronotum one-third broader than long, 
convex in all directions. Pro-mesonotal suture sharply impressed. Meso- 
epinotal suture feebly indicated. Mesonotum bluntly pointed in front, strongly 
convex transversely, almost one-third broader than long. Epinotum strongly 
convex transversely. In profile pronotum sloping downward in front, flat 
on top, base and apex strongly convex, higher than mesonotum. Pro- 
mesonotal suture wide and deep. Mesonotum and epinotum form an even 
arch from base to apex; suture very feebly indicated. Node twice as long 
as broad, oval, convex in all directions. In profile longer than high, anterior 
face feebly convex, posterior straight, in some examples feebly concave, 
dorsum flat, slightly higher in front than behind, anterior and posterior 
edges rounded ; ventral spine straight, very long and slender, fully four times 
as long as broad at base. Postpetiole fully one-third broader than long, 
strongly convex, almost hemispherical. Constriction between postpetiole and 
first segment sharp and deep. First segment of gaster barely one-third 
broader than long, sides feebly convex. Legs long and slender. 
Male. — Unknown. 
Habitat. — Western Australia: Mundi Windi (L. Glauert). 
Type in Western Australian Museum. 
Near R. micans Clark but readily separated by the shape of 
the thorax and node. The sculpture, too, is slightly coarser. 
Rhytidoponera maniae Porel. 
(PI. V, tig. 42.) 
Ectatomma ( Rhytidoponera ) maniae Forel, Ann. Soc. Ent. Belg., xliv, 
p. 57, 1900, ^ . 
Rhytidoponera (Rhytidoponera) maniae Emery, Gen. Ins., fasc. 118, 
p. 38, 1911, y. 
Rhytidoponera mayri Em. r. glabrius For. var. rotiindata Stitz, Sitz. 
Ges. Naturf. Fruende, Berlin, No. 8, 1911, ^ . 
Worker. — Length, 10 mm. 
Blackish-brown. Mandibles, antennae and legs reddish-brown. 
Mandibles, scapes and tibiae finely striate longitudinally, each with 
numerous very small piligerous punctures. Clypeus irregularly, almost 
longitudinally punctate-rugose. Head very finely and densely reticulate, 
longitudinally striate between frontal carinae, striae diverging outward behind, 
with numerous large shallow scattered punctures between the striae, shining 
at bottom, widely separated from each other, thorax very finely and densely 
reticulate as on head. Anterior half of pronotum finely striate transversely, 
irregularly punctate-rugose behind, the punctures large and shallow, widely 
spaced in front, closer together behind. Mesonotum more abundantly punc- 
