382 Dr. A. S. Packard, Jr's Revision of the 



2d joint triangular, body of abdomen ovate, thickest near the tip, which 

 is rufous, equilaterally triangular, sides ridged, at base wider than 

 long. 



Length of body, .20 — .26; head and thorax together, .10 — .13; ab- 

 domen, .10 — 13 inch. 



Maine, (Packard.) West Farms, New York, (Angus, Coll. Ent. Soc.) 

 Conn., Albany, N. Y., May, (Norton.) Brookline, Mass., (Shurtleff). 



This species has been bred from the stems of Spirasa, and from the 

 pith of the Hose and stems of Corcorus japonica, in hot-houses, by Mr. 

 James Angus. It is easily recognized by its pedicellate abdomen. The 

 antennas are more clavate than usual, the joints more swollen, terminal 

 joints much larger, the clypeus is produced into a triangular lobe, with 

 a remote minute tooth on each side. The entirely smooth propodeum 

 which has not been before observed in any of this genus, the small size 

 of the semi-ovate enclosure, also the entirely black thorax, and the 

 smooth convex prothorax, rounded on the sides, farther distinguish 

 it. In some specimens the two anterior pairs of femora are testaceous 

 yellow, and striped with brown above. 



It is allied to the two European species with pedicellate abdomens : 

 i.e. C. tibialis and C. davipes. 



Ehopalum rufigaster, n. sp. 



% Head a little more cubical than in R. pedicellatum, not quite so 

 rapidly retreating on the sides, posteriorly ; eyes broader, extending 

 farther backwards; front hardly as wide ; ocelli a little further apart; 

 in front the surface is deeply impressed mesially, but not so polished 

 as in the other species; it is broad as usual towards the insertion of the 

 antennas, where is a sparse silvery pubescence; the head is also in 

 front much more transverse and shorter from above, downwards, than 

 in the preceding species. Mandibles yellow, fuscous at the extreme 

 tip ; antennas with the scape much swollen towards the tip, entirely 

 yellow; basal joint of the flagellum very large, barrel-shaped. 3d joint 

 pinced in, so that 2d and 3d are dentate towards the tip, especially the 

 2d ; the 3d being but an obtuse swelling ; dark brown, basal joint paler 

 beneath. Thorax much as in preceding species, minutely pubescent, 

 tubercle pale yellow, propodeum a little longer, smooth, minutely pu- 

 bescent on the anterior surface ; no semi-ovate enclosure, smooth ob- 

 tuse, as usual, mesial furrow well marked. Tips of two anterior pair 

 of coxae, trochanters and legs entirely yellow; tip of hind coxas hardly 

 yellow, trochanters yellow, femora black, base of tibiae pale yellowish, 

 beyond black; base of tarsal joint pale, beyond brown, longer aud slen- 



