158 CRABRONIDZ. 
slightly canaliculated; the antenne black, their scape yellow 
with a black line behind; the inner orbits of the eyes and the 
clypeus covered with a dense silvery pubescence; the mandibles 
rufescent at their apex. 
The thorax black, thickly covered with very minute punc- 
tures; the dorsolum at its base with two central and two lateral 
longitudinal impressed lines extending to the disk; the meta- 
thorax has at its base a subcordiform shining space very delicately 
punctured at its sides, enclosed around with a consute impres- 
sion, a longitudinal one in its centre, broad at the base, and nar- 
rowing towards the apex of the subcordiform space, where it 
becomes obsolete, beyond this it again widens into a deep fossulet 
which extends the whole length of the metathorax, the posterior 
portion of which is punctured in front and slightly transversely 
striate behind ; the peristethium has behind on each side a minute 
tooth; a minute dot sometimes on each side of the collar, the 
tubercles and the extreme base of the wings (not the tegule, 
which are piceous) yellow; the wings slightly coloured, irides- 
cent, their nervures piceous; the legs black, the anterior femora 
at the knee, their tibiz in front and aboye, the intermediate tibize 
above, and the posterior ones witha ring at their base, all yellow; 
the anterior and intermediate tarsi yellow at their base, and rufo- 
piceous at the apex; the posterior ones entirely piceous, the 
anterior pair very slightly ciliated, and the intermediate and 
posterior tibiz slightly spinose, the latter very much thickened 
on the exterior towards the apex. 
The abdomen smooth, shining, clavate, longer than the head 
and thorax; the last segment pinched on each side, presenting 
above a trilobate concavity, the apex rufescent 9. 
The $ has the antenne simple, and with their clavolet fimbri- 
ated beneath, and differs in having the anterior femora yellow 
inside, and above testaceous, with the posterior margin below 
fimbriated ; the intermediate femora yellow-testaceous within, and 
a testaceous, sometimes yellow, stain behind; the intermediate 
trochanters and femora fimbriated, the latter only at their 
