234 MANDIBULATA. HYMENOPTERA. 



the tip curved; abdomen smooth^ shining, narrower than the head and 

 thorax, the basal segment distinctly widened towards its apex, the 2nd to 

 6th of equal width ; legs slender, tawny-red, the coxse black, with the 

 extreme tip red, the hinder trochanters black above, and the posterior tarsi 

 fuscous ; wings hyaline, iridescent ; cellule irregularly 3-angular, petiolated. 

 Found, in July, at Darenth wood. 



Sp. 9. maculicoUis. JViger, pedibus rujis, coxis et trochanteribus anteriorihus 

 pallidiorihus, tarsi s posticis et tibiarum posticarum apice vigris, ore et macula 

 ante alasjlavis, celhdd nulla. (Long. corp. 3lin. ; Exp. Alar. 5 lin.) 



Tr. maculicoUis. Steph. Nomen. 2d edit. Gen. 715. 9. 



Black, shining : mouth bright yellow, with the tips of the mandibles black; 

 thorax with a light yellow dot before the wings, at the base ; abdomen 

 glossy, smooth, with the extreme edge of the 4 last segments whitish; legs 

 tawny-red, with the 4 anterior coxse and trochanters paler, or yellowish; 

 hinder tarsi and their tibiae at the apex black; wings hyaline; cellule 

 wanting. 

 Found in July near London. 



Sp. 10. integrator. Niger, pedibus riifis, posticoruni tarsis et tibiarum apice 

 nigris, orefiavo; vaas facie Jlava. (Long. corp. Sg — 4 lin.; Exp. Alar. 4 — 

 7 lin.) 



Ich. integrator. Muller Prod. No. 1824. — Tr. integrator. Steph. Nomen. 

 '2d edit. Gen. 715. 10. 



Black: mouth yellow; male with the face yellow, sometimes with a short 

 longitudinal black line ; antennae slender, the 3 basal joints black (the 1st 

 rarely yellow beneath), the remainder generally reddish, or rarely red; 

 abdomen of a silky hue, with a bluish tint ; legs red, the apex of the hinder 

 tibiae and their tarsi entirely black; wings slightly smoky-hyaline; cellule 

 irregularly 3-angular, petiolated. 

 Takeuj but rarely, near London, and in the New Forest, in June. 



Sp. 11. subnitidus. Niger, segmentorvm marginibus flavicantibus, femoribus 

 tibiisque anteriorihus subtus stramineis, ore et antennis subtusjlavis. (Long, 

 corp. 3 lin.; Exp. Alar. 5\ lin.) 



Tr. subnitidus. Gravenhorst, ii. 144. — Stejih. Nomen. 2d edit. Gen. 715. 11. 



Black : mouth yellow, with the base and apex of the mandibles black ; antennje 

 short, and in general dull reddish or j'^ellowish beneath, with the 3 basal 

 joints black; abdomen with the basal segment channelled and entirely 

 black, the remainder with the extreme margins pale whitish yellow, with a 

 reddish tint on the sides of the 4th to 6th ; legs moderate ; 4 anterior Avith 

 the coxae and trochanters black, their femora black, pitchy straw-colour 

 beneath, tibiae and tarsi obscure red-brown, beneath straw-colour; posterior 

 black, with the tarsi fuscous ; wings somewhat hyaline ; cellule irregularly 

 3-angnlar, petiolated. 



The femora are sometimes entirely red above. 



