180 MANDIBULATA. — HYMENOPTERA. 



pointing backwards ; legs yellow, coxae and trochanters black, with a yellow- 

 spot; 4 anterior femora with a black line, posterior yellow, with the apex 

 black, or black, with the base yellow ; posterior tibiae with the apex black ; 

 wings yellowish-hyaline. 

 Very rare : found near London in June. 



Sp. li^. flavoniger. Niger, facie punciis ad alarum radicem, maculis meta- 

 thoracis, segmentis 1-3 Jlavis, segmento ^Jlavomaculato, pedibus Jlavis nigro- 

 maculatis. (Long, corp, 7 — 8 lin.; Exp. Alar. 13 — 14 lin.) 



Ic. flavoniger. Gravenhorst. — Steph. Catal. 347. JVo. 4387. ^ 



Black : face and mouth yellow ; antennae with the basal joint beneath, thorax 

 with the upper margin of the collar, or neck, a dot before and another below 

 the wings, and at times 1 or 2 on the metathorax, with the scutellum 

 yellow; abdomen with the basal segment yellow, its peduncle black, 2nd 

 and 3rd yellow, sometimes with the extreme edge black, the 4th either 

 with the sides and margins yellow, or yellow, with a basal black spot, or 

 entirely black, with intermediate varieties ; legs yellow, coxae black, with a 

 yellow spot; trochanters black, with the tips yellow; 4 anterior femora 

 towards the outer base, and the posterior at the apex, and hhider tibiae also 

 at the tip, black ; wings yellowish-hyaline ; cellule 5-angular. 



It appears singular that of this abundant insect males only should be known : 

 can the opposite sex be Ic. terminatorius ? 

 Common in some parts of the country, especially near London and 



in Salop, in the summer. 



Sp. 143. equitatorius. Niger, facie, punctisque ad radicem alarum Jlavis, seg- 

 mentis l-4< Jlavis, bast plerumque iiigris, pedibus Jlavis, coxis et trochanteribus 

 nig?'is. (Long. corp. 6 — 74 lin.; Exp. Alar. 11 — 13 lin.) 



Ic. equitatorius. Gmelin. — Steph. Catal. 347. No. 4383. 



Black : mouth and face yellow, the latter with sometimes a black dot or patch, 

 or black, with the orbits alone yellow; a:itenns dusky, the basal joint 

 yellow or ferruginous beneath ; thorax with a dot before, another beneath, 

 and a minute one below the scutellum, as also this last, yellow; abdomen 

 with the 1st segment yellow, its base black, 2nd also yellow, generally 

 reddish or fuscous at the base, 3rd and 4th yellow, with the base fuscous or 

 black, remainder black, the 7th being more or less ferruginous ; legs yellow, 

 coxae and trochanters black, the tip of the last fulvescent ; the 4 anterior 

 coxffi frequently with a more or less distinct yellow dot ; wings hyaline ; 

 cellule somewhat 3-angular. 



Larva feeds on that of Achatia piniperda. 



Rare : taken near Hertford and Ripley in June. 



Sp. 144. lurjdus. Niger, facie, punctis ad alarum radicem, macuUsque meta- 

 thoracis, Jlavis, abdomine Jlavo, apice nigro, pedibus anterioribus sordidefulvis, 

 posticis nigris tibiis basi Jlavo. (Long. corp. 4 — 6 lin. ; Exp. Alar. 7 — 10| lin.) 



Ic. luridus. Gravenhorst, i. 406. — Steph. Nomen. ^d edit. col. 135. 



