220 CRABRONIDZ. 
the anterior pair very large; the legs spinose, and the anterior 
tarsi strongly ciliated. 
The abdomen black, delicately punctured, slightly shining; 
the first segment subpyriform, and having a large triangular 
yellow spot on each side, forming a broad band, attenuated in 
the centre, and very slightly interrupted ; the second segment 
with a broad yellow band just before the margin, and the third 
with a narrower one placed at the margin, the band of the 
second segment continued across the venter 9. 
The ¢ differs in having the inner orbits of the eyes yellow, 
which extends to near the vertex; the mandibles also yellow, 
their apex piceous; the tarsi yellow testaceous; the posterior 
tibiz yellow on the outside at their base, and the terminal seg- 
ment of the abdomen having two strong sete. 
| g¢ in Mr. Curtis’s Cabinet ; 
in my own. 
+4+ Mr. Curtis does not remember where his specimen 
was taken. Mine was captured in the vicinity of London. 
Genus XXXIJI.—Arpactus. Jurine. 
Heap subrotund, as wide as the thorax ; ‘eyes oval, lateral ; 
stemmata placed forward on the vertex ; antenne very slightly 
increasing towards the apex, in the 2 much curved, in the 
é porrect, and not longer than those of the @, inserted at 
the base of the clypeus; clypeus transverse, convex, slightly 
marginate in front; labrum triangular ; mandibles bidentate. 
The tTHoRAx ovate ; the collar slightly narrowed in front into 
a neck ; the scutellum transverse; the metathorax truncated, 
and having a triangular enclosure at its base; the superior 
mings with one narrow marginal cell and three submarginal 
cells, the second recewing both the recurrent nervures ; the legs 
with the anterior ¢arst strongly ciliated, and the intermediate 
and posterior tibie spinose. The aBpomeN ovato-conical, 
much acuminated, and bent downwards at its extremity. 
Type, A. formosus. Jurine. 
