ICIINEUMONID^. 95 



golden gloss; about the middle of the wing, at the tip of the externo-medial 

 cell, a triangular black mark, and at the tip of the wing a large, irregular, black 

 cloud; stigma yellow, nervures black. Abdomen darker at base than at tip, 

 the segments not strongly constricted. Length 9 lines, 



Hab. — Maine. One specimen. This fine species is readily recognised by its 

 handsomely ornamented wings. 



T. RileyL— 9. Large, robust, entirely ferruginous; head large, quadrate, 

 eyes small, cheeks prominent; tips of mandibles blackish ; antennse long, taper- 

 ing to a tine point at tip, fulvous, base ferruginous, tip blackish ; seutellum ob- 

 tusely elevated; metathorax rugose, elevated on the basal middle, carinse 

 sharply defined; wings fuscous with a golden gloss, stigma fulvous, nervures 

 black ;. basal third of marginal cell, base of both wings and a costal streak on 

 the posterior pair, dilated a little beyond the middle where it ends, yellow ; 

 areolet petiolated ; legs color of body, somewhat golden sericeous, as well as the 

 thorax beneath; abdomen long, clavate, robust, and subconvex beyond the ba- 

 sal segment, which is slender at base and dilated at tip, the disk of which is 

 raised into an obtuse tubercle; extreme tip slightly dusky. Length 13 lines. 



Ifa6.— Illinois. (Coll. Mr. C, V. Eiley). 



Stilpnus americanus. — % 9- Deej) black, smooth and polished; mouth more 

 or less reddish; ant nnrs rather stout, slightly thickened towards the tip in 9> 

 basal third or half reddish, the rest blackish ; mesothorax trilobed, but not pro- 

 minently so: metathorax deeply excavated behind, with a stout tubercle on 

 each side: tegulre yellowish; wings hyaline, beautifully iridescent, nervures 

 and stigma pale brown, areolet 5-angular, complete; legs, including the coxae, 

 fulvous, the posterior cox88 dusky at base; abdomen flat, smooth and polished, 

 beyond the first segment in 9 '^ is circular or semicircular when viewed from 

 above, in % oblong-ovate; first segment narrow, deejily channeled down the 

 middle, somewhat acicuiate in % . Length 2 — 2^ lines. 



Hab. — New York, New Jersey and Pennsylvania. Four 9 > o'^® % , speci- 

 mens. 



S. clypeatus. — %. Black, shining, face and mouth pubescent; clypeus, man- 

 dibles and palpi, lemon-yellow; antennse nearly as long as the body, rather ro- 

 bust, of uniform thickness, reddish-brown, scape yellow; tegulse and a spot be- 

 fore, yellow; metathorax rough, rugose, transversely so behind, the posterior 

 sloj)e divided into three long areas; wings hyaline, iridescent, nervures and 

 stigma brown, the latter large, the marginal cell large and subtriangular, the 

 areolet 5-anguIar; legs yellowish-testaceous, whitish at base, posterior coxae, 

 tips of their femora, most of their tibiae and tarsi, dusky; abdomen elongate, 

 narrow, with a long slender petiole, piceous, the apical margins of the second 

 and following segments narrowly, and the venter, pale testaceous, Length 2 

 lines. 



Hab. — Illinois, (Dr. Lewis.) One % , specimen. 



S. hadsonicus. — % . Black, shining, thinly pubescent; mandibles, except tips, 

 and the palpi, whitish; antennae about two-thirds the length of the body, the 

 scape pale beneath; metathorax rugulose, with sharply defined elevated lines, 

 forming numerous irregular cells ; teg ul 33 pale fulvous; wings hyaline, irides- 

 cent, nervures and stiijma brown, the latter large, the marginal cell large and 

 subtriangular, the areolet subquadrate; legs fulvous, pale at base, posterior 

 coxa black, extreme base of their tibiae, most of their tarsi, and tij^s of the four 



