34 
AUSTRALIAN SPECIES OF KHYTIDOPONERA MAYR 
top. Dorsum and declivity of epinotum united in a feeble convexity dropping 
at an obtuse angle. Node not distinct from above, slightly broader behind than 
in front. In profile low, convex above, fully as long as the stalk in front. 
Ventral spine long, slender and sharp, twice as long as broad at base. Post- 
petiole almost one-fourth broader than long, cone-shaped. First segment of 
gaster fully one-third broader than long, broader behind than in front, sides 
convex. The constriction between the two segments deeply indented. Geni- 
talia retracted. Legs long and slender. 
Habitat. — North Queensland: Kuranda (T. Greaves; C. Barrett); Cape 
York (W. B. Barnard). 
The shape of the head separates this species from all others. 
llliytidoponem (jUihrior Forel. 
(PL III, tigs. 18, 14.) 
Ectatomma (Rhytidoponera) inayri Em. subsp. glabrius Forel, Fauna 
Sudwest. Austrl., i, p. 268, 1907, ^ . 
Rhytidoponera ( Rhytidoponera) mayri Em. subsp. glabrior Emery, Gen. 
Insect., fasc. 118, p. 38, 1911,5*. 
Rhytidoponera inayri Em. r. glabrior Forel, Bull. Soc. Vaudoise des 
Sc. Nat., xliv, p. 174, 1913, 5^ $ . 
Worker. — Length, 12 mm. 
Black. IMandibles, funiculi and tarsi dark brown. 
Mandibles finely and densely striate longitudinally. Scapes and tibiae 
densely and delicately striate longitudinally. Clypeus coarsely rugose longi- 
tudinally. Head coarsely punctate-rugose, longitudinal between frontal 
carinae, diverging outward behind and encircling the antennal fovea, some 
finer transverse rugae at occipital border ; the interstices very finely and 
densely reticulate. Pronotum very coarsely and irregularly rugose, some- 
what transverse in front, longitudinally arched behind. Mesonotum coarsely 
punctate-rugose, the punctures very wide and shallow. Epinotum coarsely 
punctate-rugose as on mesonotum but more transverse, coarser on declivity 
than on dorsum. Some fine transverse striae at junction with mesonotum; 
the whole thorax densely and very finely reticulate between interstices. Node 
coarsely reticulate with some large deep punctures, anterior face transversely 
striate. Both segments of gaster finely and densely striate transversely, with 
small scattered piligerous punctures. Femora finely reticulate. 
Hair brownish, very short, erect and sparse throughout. No pubescence. 
Head one-fifth longer than broad, sides feebly convex, occipital border 
feebly convex with a slight depression in the middle, angles rounded, slightly 
projecting in front, with indications of a crest. Mandibles with small irregular 
denticles. Clypeus broadly convex above and in front. Frontal area triangu- 
lar, large and deep. Frontal carinae as long as broad in front. Scapes extend 
beyond occipital border by almost half their length. Second segment of 
funiculus one-third longer than first, and slightly longer than third, apical as 
long as the two preceding together. Eyes placed just in front of posterior 
third of sides. Thorax fully twice as long as broad, pro-mesonotal suture 
sharply impressed, meso-epinotal suture feebly impressed. Pronotum one- 
third broader than long, sides and dorsum feebly convex. Mesonotum one- 
fifth broader than long, strongly convex in all directions, anterior edge 
