Neiv Fossoricd Hymenoptcra from Australia. 415 
cell. A very deep longitudinal sulcus reaches from the base to the 
middle of the first dorsal segment of the abdomen. 
Black, with short whitish pubescence on the head and pleurae; 
the anterior margin of the clypeus, mandibles, the apex of the in- 
terantennal prominence, the margins of the pronotuni, tegulae, a 
longitudinal line on the scutellum and the pustscutellum yellow; 
an obscure spot on each side on the vertex, the second and third 
abdominal segments, the apex of the first and the base of the fourth 
dark ferruginous ; the tibiae, tarsi and apex of the femora testaceous 
brown. Wings hyaline, nervures fuscous. Length 8-10 mm. 
Hah. Queensland, Bundaberg {Perldns) \ two specimens. 
This is not a typical Asthcnothynnus^ but is better 
placed in that genus than in any other. 
Eimdiotliynnns arcid, sp. nov. 
5. Head flattened, twice as broad anteriorly as posteriorly, not 
rounded at the sides, slightly raised in the middle and depressed 
on the sides, subopa([Ue, with a few punctures in longitudinal 
rows on the front, and a very short frontal sulcus. Eyes oval, 
touching the base of the mandibles. Pronotum longer than broad, 
flattened, subopaque, with an obscure median carina, the sides 
almost parallel. Scutellum rounded at the apex; the median 
segment shorter than the scutellum, obliquely truncate posteriorly, 
shining, very sparsely punctured ; the pronotum about half as long 
again as the scutellum and median segment combined. Abdomen 
broader than the thorax, shining, the segments very finely aciculate 
at the base, with a few deep punctures before the apex ; the first 
segment with a transverse groove just before the apex, the second 
with three strong transverse carinae in addition to the less strongly- 
raised apical margin; the third and fourth segments narrowly 
depressed on the apical margin. Pygidium almost vertically 
truncate, very narrowly elongate ovate, with a tuft of golden hairs 
on each side. Fifth ventral segment coarsely punctured. Inter¬ 
mediate and posterior tibiae broad and spinose, tarsi slender. 
Black, the abdominal segments on the sides and at the apex 
very pale luteous ; tibiae and tarsi luteous brown ; antennae and 
mandibles fusco-ferrugiiious; the posterior slope of the median 
segment thinly clothed with long white pubescence. Length 6 mm. 
Mandibles bidentate, the inner tooth very short and blunt. 
Clypeus produced and narrowly truncate at the apex, with a low 
carina from the base to the middle, clothed with long white 
pubescence, finely and closely punctured, more closely at the base 
than at the apex. Head, thorax and median segment finely and 
