ICHNEUMONID.E. MESOLEFTUS. 229 



yellow ; tarsi a little dusky towards the apex ; wings ample^ smoky-hyaline; 

 cellule 3-angular, slightly petiolated. 

 Taken in June at Darenth wood : rare. 



Sp. 51. geniculosus. Niger, abdominis medio, antennis pedih usque rufis, femo- 

 ribus tibiisque posticis apice nigris, orejlavo, (Long. corp. 3§ — 4i lin.; Exp. 

 Alar. 5i— 8lin.) 



Me. geniculosus. Gravenhorst, ii. 102. — Stepk. N'omen. 2d edit. Gen. 714. 31. 



Black : mouth yellow ; mandibles black at the tip and base ; antennas incurved at 

 the tip, rusty-red, obscure above, the basal joint blackish, reddish or yellow 

 beneath ; abdomen oblong, basal segment black, its apex red, 2nd to 4th 

 red, remainder black, the 5th, though rarely, with its base red ; legs mode- 

 rate ; 4 anterior either entirely yellow, or fulvous, with the coxse and tro- 

 chanters yellow, posterior red, trochanters yellow, the tips of the femora and 

 of the tibiae black, the tibiae sometimes yellowish towards the base; tarsi 

 red ; wings stained hyaline ; cellule minute, 3-angular, petiolated. 

 Also taken near London, in June and July. 



Sp. 52. Antilope. Niger, abdomine rirfo, segmentis 5-7 dorso nigricante, pedihus 

 Tufis, thorace ferrugineo maculato, antennis 3-coloribus. (Long. corp. 3| — 4 

 lin.; Exp. Alar. 5^ — 8 lin.) 



Me. Antilope. Gravenhorst, ii. 104. — Steph. N'omen. 2d edit. Gen. 714. 52. 



Black: palpi straw-colour; head sometimes with 2 reddish-brown spots 

 below, and 2 above, the antennae, the latter porrect, the 4 basal joints rusty, 

 the 1st dusky above, 5 next black, 10th to 15th white, the remainder black ; 

 thorax with a line or dot before the wings, another below, and sometimes a 

 spot on the sides of the metathorax ferruginous ; abdomen ovate pear-shaped, 

 red, with the 3 terminal segments dusky above ; ovipositor very short, a 

 little exserted and curved upwards; legs moderate, red, the base of the tro- 

 chanters sometimes black, the posterior with the tips of the femora and of 

 the tibise sometimes obscurely dusky; wings somewhat hyaline, with a 

 minute 3-angular cellule, or none. 

 Found near London, in June and July. 



Sp. 53. rufocinctus. Niger, segmenti 3-tii dorso rufo, tibiis anterioribvs fcmori- 

 lusque riifis, tibiis post ids albidis apice nigro. (Long. corp. 3 lin.; Exp. 

 Alar. 4i lin.) 



Me. rufocinctus. Gravenhorst, i. 686. — Steph. Nomen. 2d edit. Gen. 714. 53. 



Black: palpi whitish ; antennae curved, rusty towards the apex; abdomen 

 oblong-ovate, the 1st segment black, 2nd subquadrate, also black, 3rd 

 transverse, chestnut-red, towards the margin and on the sides black, the 

 remainder black ; legs moderate, 4 anterior pale red, with the trochanters 

 yellowish and coxae black ; posterior with the coxae and trochanters black, 

 the latter yellowish at the tip ; femora red, with the base and extreme apex 

 black; tibiae whitish, with the tip black; tarsi fuscous ; wings somewhat 

 hyaline, iridescent; celluk 3-angular-transverse, petiolated. 



