New tossorial Hymenoptera from Australia. 413 
ferruginous at the apex, but I can find no structural 
difference. The tubercle on the median segment of the 
female is remarkable. 
AsthenothynmLS ruh'omacidatus^ Turn. 
Thynnus {Aeolotkynnns) rubromaculatus, Turn., Proc. 
■■ ■ Tiinn. Soc. N.S. Wales, xxxiii, p. 118, 1908, 
9, Head and thorax smooth and shining ; the head nearly half 
as broad again as long, slightly convex, very strongly rounded 
posteriorly, the clypeus without a carina ; no sulcus on the front; 
the antennae very short, not equal in length to the distance between 
the eyes, which are very small and situated near the base of the 
mandibles. Thorax very narrow, not more than one-third as broad 
as the anterior margin of the head, the pronotum distinctly longer 
than broad, the sides parallel, without a sulcus, the anterior angles 
not produced; scutellum a little narrower than the pronotum ; 
median segment slightly broadened from the base, obliquely sloped 
posteriorly, the dorsal surface before the slope only a little longer 
than the scutellum. Abdomen as broad as tlie head, shining, with 
a few scattered punctures at the base of the apical segments; second 
segment with a transverse carina close to the base, another, lower, 
just before the apex, the apical margin feebly raised ; segments 3-5 
with a strongly-raised mark rounded posteriorly on each side at the 
base. Fifth ventral segment punctured. Pygidium long and very 
narrow, almost linear, strongly compressed on the sides. Inter¬ 
mediate tibiae scarcely broader than the posterior pair, the inter¬ 
mediate tarsi slender. 
Dark reddish brown, the sides of the abdomen and the apical 
portion of the dorsal segments pale luteous; the head beneath dull 
ferruginous. Length 4 mm. 
Hah. South Australia, Adelaide {Perkins)-, in 
cop. 
This species differs considerably from others of the genus 
in the sculpture of the second dorsal segment of the 
abdomen and the absence of a frontal sulcus. The male 
also differs in the blunt hypopygium from most other 
species of the genus. 
Asthenothynnus minutissimus, sp. nov. 
$. Clypeus produced and narrowly truncate at the apex, shining, 
finely punctured at the base, smooth at the apex. Head shining, 
EE 2 
