AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
51 
impressed, a deep longitudinal groove on anterior fourth. Scutellum as 
broad as long, broadest in front. Anterior edge feebly convex, postei'ior 
border, sides and dorsum strongly convex, a fine longitudinal groove on 
posterior half of dorsum. Constriction between mesonotum and scutellum 
narrow and shallow. Metanotum fully three times broader than long, strongly 
convex. Epinotum strongly convex transversely. In profile pro-mesonotal 
suture deeply impressed. Pronotum erect, convex. Mesonotum strongly con- 
vex in front and above. Scutellum convex above, three times longer than 
high. Metanotum slightly longer than high, convex above. Epinotum 
strongly convex from base to foot of declivity. Node not defined from above, 
slightly broader behind than in front. In profile very feebly convex above, 
almost parallel, the ventral spine short and thorn-like. Postpetiole slightly 
broader than long, sides strongly convex. First segment of gaster almost 
one-third broader than long, slightly broadest behind. Deeply and broadly 
constricted between the two segments. Genitalia retracted. Legs long and 
slender. 
Habitat. — Queensland : Brisbane (H. Hacker) ; Westwood (A. N. Burns) ; 
Rockhampton (H. J. Carter) ; Toowoomba (W. B. Barnard) ; Stanthorpe 
(E. E. Sutton). 
Rhytidoponera cristata Mayr var. punctiventris Forel. 
(PI. IV, figs. 28-29.) 
Ectatornma (Rhytidoponera) cristata Mayr var. punctiventris Forel, 
Ann. Soc. Ent. Belg., liv, p. 56, 1900, 5 . 
Rhytidoponera (Rhytidoponera) cristata Mayr var. punctiventris Emery, 
Gen. Ins., fasc. 118, p. 38, 1911, ^ . 
Worker. — Length, 11 mm. 
Black. Mandibles, antennae and legs brown. 
Mandibles, scapes and tibiae very finely and densely striate longitudinally. 
Clypeus coarsely punctate-rugose, rugae longitudinal. Head very finely and 
densely reticulate longitudinally striate-rugose between frontal carinae, diverg- 
ing outward behind, with numerous large, shallow punctures. Thorax and 
node very finely reticulate as on head. Pronotum with a few very scattered, 
very shallow, large punctures, almost obsolete. Punctures on mesonotum 
and epinotum smaller and more numerous, declivity of epinotum coarsely 
rugose transversely. Node circularly striate-rugose, anterior face reticulate. 
Gaster very finely and densely reticulate-punctate, with some larger, scattered 
punctures. Femora densely reticulate, with numerous small piligerous punc- 
tures. 
Hair yellow, long and erect on front of clypeus and apex of gaster, very 
short and erect elsewhere on body, much shorter and suberect on antennae 
and legs. No pubescence. 
Head one-fifth longer than broad, sides straight, angles bluntly rounded; 
a feeble crest projects slightly at the angles, concave at middle of border. 
Mandibles with numerous rather large denticles. Clypeus broadly convex 
above and in front. Frontal area triangular, large and deep. Frontal carinae 
as long as broad in front. Scapes extend beyond occipital border by fully one- 
third their length. Second segment of funiculus barely one-third longer than 
first, and one-eighth longer than third, apical as long as the two preceding 
together. Eyes large and convex, placed just in front of posterior third. 
