AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
19 
35. Sides of head very feebly convex, almost straight, 
crest feeble. Node higher than long, anterior face 
straight, vertical, dorsum longitudinally grooved, 
flat, sloping downward and rounded into posterior 
face. Spine long and sharp, broad at base. Gaster 
densely and microscopically punctate. Blackish 
brown. 10 mm punctata Sm. 
36. Sides of head more convex, crest sharp, interrupted 
at middle. Node longer than high, anterior face 
vertical, straight, posterior face convex rounded 
into dorsum, latter flat, with a feeble longitudinal 
groove, spine long, slender and sharp. Gaster 
microscopically punctate. Dark brown. 9-9-5 mm. 
rufonigra sp. nov. 
37. Sides of head convex, no crest. Epinotum straight, 
declivity straight, one-third longer, and rounded 
into dorsum. Node as long as high, anterior face 
vertical and straight, posterior face straight, sloping 
forward above, rounded into dorsum, latter flat 
without longitudinal groove. Spine short, thorn- 
like. Gaster very finely reticulate-punctate. Choco- 
late brown. 10 mm flindersi sp. nov. 
38. Head broadest in front, sides convex. Epinotum 
straight, sloping downward to inferior third of 
declivity. Node higher than long, faces almost 
pai'allel, dorsum sloping downward behind, as long 
as posterior face. Spine very short, slender and 
sharp. Gaster densely microscopically punctate. 
Dark brown. 10 mm levior Craw. 
39. Head parallel to eyes, strongly convex behind. 
Epinotum strongly convex. Node higher than long, 
anterior face slightly convex, posterior face straight 
and vertical, slightly longer than dorsum, spine 
three times longer than broad at base, slender and 
sharp. Gaster transversely striate. Dark brown. 
8 mm micans sp. nov. 
40. Occipital border feebly convex, crest feeble. Dor- 
sum of epinotum very short, rounded into declivity. 
Node as long as high, anterior face vei'tical, 
straight, posterior face straight, inclined forward 
above, rounded into dorsum, latter flat, anterior 
edge sharp. Spine short, slender and sharp. Post- 
petiole very finely transversely arched striate, first 
segment of gaster finely striate longitudinally. 
Chocolate brown. 8-9 mm spatiata Forel 
41. Eyes large. Thorax evenly convex. Node longer 
than high, anterior face feebly convex, posterior face 
in some examples concave. Spine slender and 
sharp, four times longer than broad at base. Post- 
petiole transversely arched striate, first segment of 
gaster longitudinally striate. Brown. 7-5-8 mm. 
flavicornis sp. nov. 
