144 MANDIBULATA. — HYMENOPTERA. 



trochanters blacky anterior occasionally reddish beneath; posterior with the 



tarsij and at times the apex of the tibise and femora black or dusky ; wings 



hyaline, with the stigma, costa, and scales brown or pitchy, sometimes 



reddish ; cellule obscurely 3-angular, or 5-angular. 

 Extremely variable in size : the face is more or less spotted with black, and 



the antennae are sometimes entirely black, excepting the white under side 



of the basal joint. 

 I suspect this insect to be the male of Ic. annulator, as stated In p. 137. 



Extremely abundant, within the metropolitan district, about June, 

 in hedges and on umbelliferous flowers : taken also near Dover, in 

 the New Forest, Salop, &c. 



Sp. 48. fiilvipes. Niger, trochanteribus femoribus tibiis iarsisque anlerioribus 

 pallide rvfis, scutelli apice facieque albis. (Long. corp. 2ilin.; Exp. Alar. 

 4i— 5 lin.) 



Ic. fulvipes. Steph. Nomen. 2d edit. col. 132. 



Black: face and basal joint of the antenna beneath white; thorax with a 

 minute dot beneath the wings, and the apex of the scutellum white; 

 abdomen glossy, with the margin of the 2nd segment slightly edged with 

 chestnut; legs, excepting the coxae, which are black, pale red, the extreme 

 tip of the hinder tibiae and the hinder tarsi fuscous ; wings hyaline, with the 

 costa and scales fuscous, stigma pale reddish. 

 Taken at Hertford, in July. 



Sp. 49. albifrons, Niger, facie et scutelli apice albis, femoribus tibiisque ante- 

 rioribus pallide rufis. (Long. corp. 5^—Qk Hn.; Exp. Alar, 10—11^ lin.) 



Ic. albifrons. Steph. Nomen. 2d edit. Appendix. 



Black : face white, external orbits of the eyes above slightly so ; thorax with 

 an obscure whitish streak before the wings, and the apex of the scutellum 

 also whitish, sometimes with 2 dots only of that colour ; abdomen with the 

 basal segments rough, and with 2 faintly elevated lines, the apical ones 

 smooth and glossy ; 4 anterior femora and tibise pale red, coxae, trochanters, 

 and hinder legs black ; intermediate tarsi and femora at the base behind 

 dusky ; antennae black, with the basal joint white in the middle beneath ; 

 wings hyaline, slightly fuscescent, with the costa, stigma, and scales black. 

 Found near London, and in Salop, in June. 



Sp. 50. dissimilis. Niger, antennarum annulo albo, femo7-ibus tibiisque rufis, 

 posticis apiee nigris ; mas facie et scutelli apice albis s foemina orbitis oculorum 

 internis et scutelli apice rufescentibus. (Long. corp. 3| — 4 lin. ; Exp. Alar. 

 5—6 lin.) 



Ic. dissimilis. Gravenhorst, i. 190. — Steph. Nomen. 2d edit. col. 132. 



Black: male with the mouth and face white; female with the inner orbits 

 reddish or whitish ; antennae of the male porrect, basal joint reddish beneath, 

 13th to 17th white, remainder ferruginous; of the female curved, with a few 



