ICHKEUMONID.E. TKYI'ilOX. 237 



with the basal joint yellow, having a black dot above, the remainder black, 

 the 2nd to 5th testaceous beneath; abdomen somewhat sessile, oblong-ovate, 

 as broad as the thorax, the basal segment narrowed towards the base, and 

 nearly 3-angular ; legs moderate, tawny straw-colour, 4 anterior coxae and 

 trochanters whitish, posterior coxse black, with the tips and the trochanters 

 whitish ; tarsi with the apex and extreme base of the tibiae blackish; wings 

 hyaline, iridescent ; cellule 5-angular. 

 Taken, in July last, at Hertford. 



§11. Scutellum with pale marks; aZ»(^omera either totally black, or with the 

 edges of the segments pale. 



Sp. 18. nigritarsus. Niger, pedibus fulvis, posticorum tarsis tibiisque nigris, his 

 medio albis, mandibulis Jlavis. (Long. corp. 3 lin. ; Exp. Alar. &\ lin.) 



Tr. nigritarsus. Graverihorat , ii. 15S.—Steph. Nomen. '2d edit. Gen. 715. 18. 



Black : palpi rusty-pitchy ; mandibles yellow, black at the tip ; labrum fer- 

 ruginous; antennae involuted at the apex, fuscous, or red, above fuscescen t 

 with 1 or 2 basal joints black ; scutellum with its apex, or the sides only, 

 whitish; abdomen nearly sessile, oblong, the basal segment slightly chan- 

 nelled and dilated towards the apex; legs moderate, fulvous; posterior with 

 the tarsi black, tibiae white, with the base and apex black ; wings hyaline ; 

 cellule small, irregular, petiolated. 

 Found at Darenth wood in July. 



Sp. 19. sexlituratus. Niger, niarginibus segmeniorum, facie, pectore, lined ante 

 alas, albidis ; antennis subtus pedibusque fulvis, tarsis posticisfuscis. (Long. 

 Corp. 2^ — 4 lin.; Exp. Alar. 44 — 6g lin.) 



Tr. sexlituratus. Gravenhorst, ii. 159. — Steph. Nomen. 2d edit. Gen. 715. 19. 



Black: head subglobose ; mouth, face, cheeks, and the frontal orbits generally 

 whitish-yellow; antennae shorter than the body, rusty-tawny beneath, with 

 the 2 basal joints yellow, the base above more or less fuscous ; thorax with 

 a line before the wings, and streak beneath and below the scutellum, with 

 the breast and collar beneath pale yellow ; scutellum with the apex whitish- 

 yellow ; abdomen oblong, somewhat sessile, the basal segment finely 

 aciculated, with 2 elevated longitudinal lines, a white marginal dorsal spot, 

 remainder smooth and shining, each with the sides and a transverse mar- 

 ginal spot white, and ochreous beneath ; ovipositor slightly exserted, 

 whitish ; legs rather slender, tawny, or pale red, 4 anterior coxae and tro- 

 chanters whitish-yellow, posterior with the tarsi and also in general the 

 apes of the tibis more or less blackish; wings hyaline, iridescent; cellule 

 3-angular, irregular, petiolated. 

 Not common ; taken occasionally in July within the metropolitan 



district, and in Salop. 



Sp. 20. impressus. Niger, segmentis 1-3 lined transversali impressd margine 

 testaceo, thorace et scuteUo albldo notatis, pedibus fulvis, tibiis posticis nigris 

 medio alio. (Long. corp. Sf lin. ; Exp. Alar. 6 lin.) 



