228 MANDIBUI.ATA. HYMENOPTERA. 



below white, and the remainder testaceous ; thorax with the neck, breast, 

 and the lateral sutures before the wings white ; abdomen Ynth the basal 

 segment black, the 2nd to 4th testaceous-red, the 4th often with a black 

 lateral spot, remainder black, with the anal membrane whitish ; 4 anterior 

 legs testaceous, with the coxse and trochanters whitish-straw^ as are also 

 the posterior oneS;, their femora are tawny, the tibiae pale testaceous, with 

 the tip black and the tarsi black ; wings somewhat hyaline ; cellule very 

 minute, or totally wanting. 

 Found near London and in the New Forest, about June. 



Sp. 48. luridator. Niger, segmentis 2-4, pedibusque rujis aut testaceis. (Long. 

 corp. 4 lin. ; Exp. Alar. 7 lin.) 



Mes. luridator. Gravenhorst, ii. 100. — Steph. Nomen. 9d edit. Gen. 715. 48. 



Black : mouth red^, clypeus straw-coloured; antennae ferruginous in the male, 

 red in the female^ with the basal joint fuscous; thorax of the male with 2 

 small acute tubercles on the metathorax ; abdomen slender, fusiform in the 

 male, broader and somewhat pear-shaped in the female; the basal joint 

 black, reddish on the margin in the male, 2nd to 4th red, remainder black, 

 with the edges paler ; legs moderate, rather slender, and with the coxae 

 fuscescent in the male; of the female the 4 anterior are tawny-testaceous, 

 with the coxae paler, posterior fulvous, with the coxse and trochanters paler, 

 the extreme base of the former, with the tip of the tibiae and the tarsi 

 entirely blackish; wings ample, yellowish-hyaline; cellule indistinctly 

 3-angular, petiolated. 

 Found, but rarely, near Coombe wood, in June. 



Sp. 49. gracilis. Kigcr, ahdomiiie, antennis, pedibusque posiicis rujis, facie 

 pedihusque anterioribus Jlavis. (Long. corp. 3| lin.; Exp. Alar. 54 lin.) 



Me. gracilis. Steph. Nomen. 2d edit. Gen. 714. 49. 



Black : mouth and face yellow ; antenna3 slender, incurved at the tip, pale red, 

 with the basal joint yellow beneath ; thorax with a yellow dot sit the base 

 of the wings ; abdomen slender, silky, pale red, the peduncle black ; legs 

 moderate, 4 anterior pale yellowish-red, coxse and trochanters yellow; 

 posterior red, the femora rather short and thick, trochanters yellow ; wings 

 ample, hyaline; cellule 3-angular, petiolated. 

 Taken at Hertford in June. 



Sp. 50. subcompressus. Niger, abdomine suhcompresso, segmenfis 2-5, antennis 

 pedibufqne fitlvis, trnchanteribus, coxis anterioribus, ore jacieque Jlavis- (Long, 

 corp. 4 lin.; Exp. Alar. 7 5 In.) 



Me. subcompressus. Steph. Nomen. 2d edit. Gen. 714. 50. 



Black, slender ; mouth and face yellow; tips of the mandibles black; antennae 

 red, the 2 basal joints yellow beneath ; abdomen very slender, subcom- 

 pressed, the peduncles and basal segment black, 2nd to 5th pale red, 6th 

 and 7th black ; legs moderate, 4 anterior pale red, coxse and trochanters 



