410 
Mr. Rowland E. Turner on 
very sparsely punctured. Antennae inserted as far from each otlier 
as from the eyes, the fi’ont between tliem not raised, and divided by 
a well-marked, short, longitudinal sulcus. Head rounded, not large, 
closely punctured. Thorax closely punctured, the median segment 
almost smooth, oblique from the postscutellum. Abdomen very 
sparsel}' and .shallowly punctured, the transverse line at the base 
of the segments not very deeply impressed. Hypopygium very 
broadly rounded at the apex, with a short apical spine. 
Black ; clypeus, front between the antennae, inner margins of the 
eyes very broadly as high as the base of the antennae, a small spot 
on the vertex, the anterior margin on the pronotum broadly, 
tegulae, a quadrate spot on the mesonotum, a small spot on the 
mesopleurae below the anterior wings, a small spot on each side 
at the anterior angles of the scutellum, postscutellum, the whole 
of the oblique slope of the median segment, a broad continuous 
band narrowly emarginate in the middle posteriorly on the second 
and third dorsal segments of the abdomen, a narrow band scarcely 
interrupted on the first segment, an interrupted band on the fourth 
and fifth segments, the apex of the tubercle on the first ventral 
segment and transverse bands on ventral segments 2-4 yellow. 
Wings hyaline, nervures fuscous. Legs and the undersurface of 
the scape ferruginous. Length 11 mm. 
Hah. Queensland, Bundaberg (ex coll. Perkins ); ^ ^ in 
CO'p. 
The female closely resembles rotiindiceps, Sm., but the 
head is a little smaller and slightly convex, not flattened 
as in rotundiceps. The hump on the anterior margin of 
the pronotum is more strongly developed in rotundiceps. 
The male closely resembles A. maculata, Gu^r., var. 
variegata, Klug., which may prove to be a good species; 
the clypeus in the present species is a little more convex, 
the bands on the second and third segments are con¬ 
tinuous, and the depressed line on the base of the 
segments less distinct, the yellow mark on the median 
segment is not trilobed posteriorly, the scape is ferruginous 
beneath and the hypopygium is much more broadly 
rounded at the apex. The males of this genus are very 
difficult to distinguish, but colour differences appear to 
be more constant than in some genera of the Thynnidae. 
The female of variegata appears to be quite different, but 
I have not seen specimens Avhich can be referred to that 
species with absolute certainty. 
