160 HYMENOPTERA FROM SARAWAK. 
punctured and deeply furrowed in the centre. Parapsidal 
furrows complete ; deep and crenulated. The scutellar depres- 
sion narrow, deep, crenulated. The central keel of the metano- 
tum is straight; the lateral are curved and become united to 
the central, forming a large curved area, broader at the base 
than at the apex and marked with seven stout transverse keels ; 
outside it is a large curved depression not bounded on the outer 
side by a keel and ending at the inner apical part ina round 
fovea; the middle part of the apical slope on the sides are 
irregularly punctured; the lower transversely striated. Pleurze 
sparsely punctured; the upper part of the meta- bordered by 
a wide longitudinal furrow, which is irregularly striated. The 
anterior tibize and all the tarsi are brownish; the fore femora 
are black, green above; the middle tibie black, marked with 
green behind; the hinder bluish-green. Tarsal joints thickly 
spined ; the joints narrow, longish; the claw-tooth broad at 
the base, becoming gradually narrowed towards the apex, which 
is sharp-pointed. The basal segment of the abdomen above is 
larze, rounded, but not narrowed, at the base above, slightly 
broader than long and not very much shorter than the 2nd 
segment; the 3rd segment is not much shorter than the 2nd. 
The base of the 2nd segment projects straight downwards ; the 
apex of the 1st segment in front of it projects roundly, but not 
much, downwards. 
There are only two transverse cubital nervures ; the upper 
three-fourths of the 2nd is straight and oblique, the lower is — 
also straight, but without an oblique slope; it is united to the 
radius at a short distance from its apex. 
This species is easily known by the broadly rounded, tooth- 
less apex of the median segment; by the short central keels on 
the metanotum and by there being no lateral ones, by the broad 
head and thorax, by the short, thick antenne, by the straight, 
obliquely bent 2nd transverse cubital nervure and by the basal 
three segments of the abdomen being of almost equal length. 
It is possible that this species may be A. hospes, Sm. (which 
Kohl thinks may bea var. of the Javanese A. cognata, Kohl,) 
but Smith’s descriptions are not sufficient to enable me to decide 
this; as is unfortunately the case with too many of his Malay 
specias. 
Jour. Straits Branch 
