308 ' E. T. CRESSON. 



vurcs and stigma brown, areolet 5-angular ; legs stout, rather short, ferruginous, 

 the four anterior coxpe and trochanters, and the posterior trochanters, more or 

 less yellowish, tips of posterior coxae, of their femora and of their tibise black ; 

 abdomen robust, convex, slender at base, shining, densely punctured, ferrugi- 

 nous, the disk of the second and the following segments more or less fuscous ; 

 basal segment dilated at tip, flattened above, shining, with a few punctures on 

 the apical margin ; an apical spot on each side of the second and third segments, 

 a central spot on the two apical segments, yellow. Length 5 lines. 



Hab. — Connecticut, (Coll. Mr. E. Norton.; One 9 specimen. In consequence 

 of the structure of the antennae, this species may belong to the genus Joppa. 



I. canadensis.— J . Robust, black, shining, anterior orbits, above antennae ru- 

 fous ; antennae short, joints thick set, brown-black, with a broad white or yel- 

 lowish annulus in the middle; scutellurn flat, polished, bright lemon-yellow, 

 sometimes a spot of the same color on the post-scutellum; metathorax more or 

 less distinctly obliquely aciculated, the central area large, quadrate, a dull ru- 

 fous stain on each side in one specimen; tegulae brownish: wings uniformly 

 pale fusco-hyaline, posterior pair paler; legs black, two anterior pairs ferrugi- 

 nous, their femora more or less black, their tibiae with a broad yellow band at 

 base, posterior femora black, their tibiae yellow, black at tip, their tarsi ferrugi- 

 nous ; abdomen robust, ovate, ferruginous, third and fourth segments with a 

 black band at base, sometimes the second segment has a black spot on each side 

 at base ; first segment black at base, the tip often with a yellow dot on each side. 

 Length 4 — 5 lines. 



Hab. — Canada, New York. Four 9 specimens. 



I. ventralJS. — 9- Small, robust, shining, black; anterior orbits, apical mar- 

 gin of clypeus, spot beneath the eyes, most of mandibles, and the palj)i. ferru- 

 ginous; antennae stout, the joints very short and thick set, black, tip of the 

 third and the fourth to twelfth joints fulvous; mesothorax and metathorax 

 stained with dull ferruginous; scutellum very flat, polished, dull ferruginous: 

 metathorax densely sculptured, rugulose, with a large, square, central area, not 

 well defined; tegulae testaceous; wings subhyaline, iridescent, nervures and 

 stigma fulvous; legs robust, fulvous; the coxae, basal half of trochanters, ante- 

 rior femora behind, the four posterior femora, except extreme base and apex, 

 and tips of posterior tibiae, black ; abdomen oblong-ovate, robust, fulvous, base 

 of first segment, lateral margin of second at base, basal margin of third, and the 

 fourth and fifth segments entirely, black; apical segments fusco-ferruginous ; 

 venter whitish, second to fourth segments with a black spot on each side, the 

 two following segments with a broad black band; apex fuscous. Length 4 lines. 



Hab. — Hudson's Bay Territory. (Coll. Mr. E. Norton.) One 9 specimen. 



I. signatipes. — 9 • I^hick, robust; antennae moderately long, stout to the apex, 

 the joints short, tliick set, black, reddish at base beneath, a narrow whitish or 

 yellowish annulus about the middle; head robust, not narrowed beneath, more 

 or less varied with reddish; thorax black, depressed ; tegulae, sutural line be- 

 fore and spot beneath, ferruginous, sometimes yellowish; mesothorax some- 

 times tinged with ferruginous; scutellum flat, polished, yellow; metathorax 

 densely punctured, the elevated lines well defined, but not sharp, the central 

 area quadrate or subquadrate; wings subhyaline; legs short and robust, four 

 anterior coxae red or brown, the j)osterior pair black; femora swollen, rufous, 

 the j)03terior pair more or less black at tips; tibiie ferruginous or dusky, with a 

 yellow sjiot near the base; tarsi dusky; abdomen robust, convex, ovate, rufous 



