398 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



yellow pubescent band on the posterior marsifin; mesonotum with a 

 narrow, much obscured, golden pubescent band on the side, beginning 

 in front of the tegula and running backward on the margin of the 

 plate, then inward on its posterior margin till it nearly or quite meets 

 the band of the opposite side; the remainder of the surface of the 

 plate quite closely, rather coarsel}^ punctured and with a slight ante- 

 rior median groove, extending hardly one-third of the length of the 

 plate; scutellum with fewer, shorter hairs than the other parts of the 

 thorax; its surface with rather more scattered punctures than the 

 mesonotum, with a slight median groove, more pronounced behind; 

 postscutellum obscurelj' golden pubescent, with a dense covering of 

 long 3'ellow hairs rather paler than those on the median segment; 

 median segment everywhere covered with long ^^ellow hairs, particu- 

 larly long Ijehind, where there are no pubescent spots; the dorsum 

 tinel}', transversely aciculate; sides between the stigmatal groove and 

 the petiole roughened; meso- and metapleura covered nearly every- 

 where with quite a thick covering of long 3^ellow hairs; no pubescent 

 band along the stigmatal groove; petiole short, straight, black, quite 

 thickly covered with long pale-yellow hairs. 



AJxiomen. — Above, somewhat sericeous anteriorly; more or less of 

 the first two dorsal plates ferruginous mingled with black, the other 

 plates black; the last three plates with short, yellow, backwardl}' pro- 

 jecting hairs, few and at the sides on the anterior one, more abundant 

 and extending toward the middle on the next, and generally distrib- 

 uted over the surface of the last; these plates also have correspond- 

 ingly distributed punctures; beneath, the first two plates ferruginous 

 mingled with l)lack, the other plates black; all the plates have scat- 

 tered punctures, chiefly at the sides, and a few rather long 3'ellow 

 hairs; the flfth, sixth, and seventh ventral plates are emarginate 

 l)ehind, the emargination being greater on the hinder plates and on 

 the seventh almost becoming a notch; these three plates also bear 

 numerous 3^ellow hairs at the sides, almost forming tufts, nmch as in 

 C. ichneumoneum • terminal plate like that of the last-named species. 



Wings. — Quite h3'aline, somewhat yellowish near the base and rather 

 fuliginous on the outer margins; the venation as in O. ichneuino- 

 neuiii : teguhe almost black, but with a brownish tinge, a little lighter 

 on the outer border; faintl3" sericeous. 



Legs. — Coxic and trochanters black, more or less hairy; fore femora 

 with numerous 3"ellow hairs, ferruginous near the base and tip, 

 elsewhere black; fore tibia? ferruginous, sericet)u.s; fore tarsi ferru- 

 ginous, sericeous above, the last segment and the claws darker, the 

 claw tips black; middle femora ferruginous at l)ase and tip, with a few 

 3'ellow hairs, chiefl3' below; middle tibiae and tarsi ferruginous, some- 

 what sericeous above, the last tarsal segment and the claws darker, 

 tips of the claws black; hind femora black except near the tip, with- 



