230 MAKDIBULATA. HYMENOPTEllA. 



Found within tlie metropolitan district ; also in the New Forest 

 and in Norfolk, in June. 



Sp. 54. Isevigatus. Niger, segmeniis 2 et 3, Jemoribus tihiisque anterioribus 

 totis, posticis pro parte, rufis. (Long. corp. 2§ — 5 lin. ; Exp. Alar. 4—7 lin.)- 



Me. Isevigatus. Gravenhorst, ii. 111. — Steph. Nomen. 2d edit. Gen. 714. 54. 



Black : palpi ferruginous or fuscous ; mandibles sometimes rusty ; antennae 

 black, the 3rd to 5th joints sometimes ferruginous beneath, the remainder 

 obscure fuscous, in the female generally of that colour below ; abdomen very 

 smooth and glossy, broad, oblong- ovate, rather acute in the female; basal 

 segment long, slender, w'lVa. 2 elevated lines, black, 2nd and 3rd red, 4th to 

 7th black, and silky in the male; legs moderate, or slenderish; 4 anterior 

 red, with the coxae and trochanters black, posterior black, tibiae reddish, 

 with the base and apex, or the apex alone black, femora sometimes reddish 

 at the base, or with the convex side chestnvit, rarely red, with the base alone 

 black; wings somewhat hyaline; cellule obscurely 5-angular, the outer 

 nervure being obsolete. 

 Not uncommon at Darentli wood, and in other places within the 



metropolitan district, about June. 



Sp. 55.*decipiens, Niger, segmento 2do et petioli Last castaneis, pedibusfuscis, 

 femorum basi et apice testaceis, tibiis posticis Jerrugineis apice nigra. (Long, 

 corp. 2 lin.; Exp. Alar. 3| liu.) 



Me. decipiens. Gravenhorst, ii. 116. — Steph. Nomen. 2d edit. Gen. 714. 66. 



Black : antennae rather short, rusty-brown, with the basal joint black ; abdomen 

 lanceolate, or oblong-ovate, with the 1st segment black, its peduncle chest- 

 nut-red towards the base, the 2nd chestnut, with the margin paler, the 

 remainder black, or the 3 first segments black, with the margins fulvous ; 

 legs moderate, brown, with the base and apex of the femora pitchy-testa- 

 ceous, posterior tibiae red, with the tip dusky; wings smoky-hyaline; 

 cellule somewhat 5-angular, incomplete. 

 Found not very commonly in the vicinity of London; taken also 



in Norfolk in July. 



* I am fully aware of the existence of other species of this genus ; but, 

 unfortunately, circumstances oblige me to remain silent respecting them : — 

 having recently selected nearly all the unascertained and nondescript species 

 thereof from my cabinets, and placed them on a setting-board in a closet for 

 examination and description, the greater portion of them were so sadly muti- 

 lated by Blattffi during the only night they were so exposed, as to render their 

 investigation unsatisfactory: I hope, however, to be enabled to ascertain some 

 of them in time for the Appendix, to which I must beg the reader to refer. 



. I may here take the opportunity of remarking, that although in very nume- 

 rous instances Gravenhorst has drawn up his descriptions from single specimens 



