20 
AUSTRALIAN SPECIES OF RIIYTIDOPONERA MAYR 
42. Crest obsolete, more prominent at angles. Epinotum 
flat, sloping downward and rounded into declivity. 
Node high and dome-shaped, anterior face sloping 
downward and forward, posterior face vertical, 
straight, dorsum convex. Spine, long, slender and 
sharp. Postpetiole and gaster finely and densely 
reticulate. Black. 10-11 mm incisa. Craw. 
43. Occipital border concave, sculpture coarse 48 
44. Sides of head feebly convex. Epinotum straight, 
sloping downward and rounded into declivity. Node 
rather thin, higher than long, faces parallel, dorsum 
convex. Spine two and one-half times longer than 
broad at base. Postpetiole transversely arched 
striate, first segment of gaster transversely and more 
finely striate. Blackish brown. 10 mm. . . maniae For. 
45. Epinotum convex from base to bottom of declivity. 
Node as high as long, i>arallel, dorsum flat sloping 
downward behind, rounded into posterior face. 
Spine long, slender and sharp. Gaster densely 
reticulate with obsolete longitudinal striae. Dark 
chocolate brown. 9 mm foveolata, Craw. 
46. Epinotum straight sloping downward, rounded into 
the short declivity. Node, in profile, constricted in 
middle, longer on top than at base. Spine very short 
and sharp. Postpetiole transversely arched rugose, 
longitudinally on first segment of gaster. Brown. 
8 5-9-5 mm malandcnsis For. 
47. Epinotum convex longitudinally. Node longer than 
high, anterior face vertical, straight, rounded into 
dorsum, latter feebly convex, posterior face concave, 
shorter than dorsum. Spine broad, plate-like at 
base with a long, slender, backward curved spine in 
front. Postpetiole longitudinally arched striate, first 
segment of gaster longitudinally striate. Blackish 
brown. 8 mm reticulata Forel 
48. Epinotum convex. Node longer than high, anterior 
and posterior faces parallel, dorsum flat, edges 
rounded. Spine short, broad, sharp-pointed. Post- 
petiole finely and circularly striate, first segment 
of gaster longitudinally striate. Chocolate brown. 
8- 9 mm crassinodis Forel 
49. Occipital border convex, no crest. Sculpture coarse . . 51 
Epinotum flatly convex from base to bottom of 
declivity. Node thick, as high as long, anterior face 
vertical, straight, posterior face and dorsum convex. 
Spine short, slender and sharp. Gaster transversely 
striate. Blackish brown, gaster with green sheen. 
9- 10 mm nodifera Em. 
50. Epinotum strongly convex from base to bottom of 
declivity. Node longitudinally grooved on top, 
anterior face vertical, straight, dorsum and posterior 
face strongly convex. Spine broad at base, short 
