214 MAXDIBULATA. HYMEXOPTETiA. 



Sp. 7. leucostomus. Niger, ore albido, pedibus flavo-pidis, untennis apicem 

 versus rufo-ferrugineis. (Long. corp. 3g lin.; Exp. Alar. 5|lin,) 



Me. leucostomus. Gravenhorst, ii. 17. — Sleph. Nomen. 2d edit. Gen. 714. 7. 



Black : mouth and clypeus whitish-yellow, mandibles black at the tip ; 

 antennae with the 3 basal joints brown-black, the following beneath ferru- 

 ginous, and the terminal ones entirely of that colour; abdomen rather 

 narrower than the thorax, the basal segment a little dilated at the apex, the 

 2nd to 4th of equal width, the remainder with the extreme edge whitish ; 

 4 anterior legs yellow, with the coxae, trochanters, claws, and base of the 

 femora black, posterior black, their tibise yellow, with the tip black; wings 

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

 Also rare : taken in June, near London. 



SjD. 8. submarginatus. Niger, facie Jlavu,nigro macuJata, pedibus anteriorihus 

 rufis, segmentis ultimis albido marginatis, cellulcl nulla. (Long. corp. 3§ lin. ; 

 Exp. Alar. 6 lin.) 



Me. submarginatus. Steph. Nomen. Qd edit. Gen. 714. 8. 



Black : mouth and face yellow, the latter with an irregular black patch in 

 front ; antennae long and slender, fuscous, beneath testaceous, with the 

 basal joint yellow; abdomen long and slender, the 3rd segment obscurely 

 edged with chestnut, and the 4 following with whitish ; legs pale red, tro- 

 chanters yellowish, hinder pair with a small black spot abov^e ; the tip of 

 the hinder femora black, their tibiae and tarsi fuscous, the base of the femora 

 reddish without ; wings hyaline, cellule wanting. 

 Found in July last at Hertford. 



§ II. Scutellum pale, or with pale marks : abdominal segments generally with 



pale edges, 



Sp. 9. pectoralis. Niger, pedibus rufis, posiicotum tarsis et tibiarum apice 

 Juscis, ihorace Jlavomaculato, antennis subtus ferrugineis artieulis 1-3 albidis : 

 mas Jacie pectore et coxis anterioribus Jlavis ; tcemma Jacie JIavomaculata. 

 (Long. corp. 3§ — 4 lin. ; Exp. Alar. 5 lin.) 



Me. pectoralis. Gravenhorst, ii. 21. — Steph. Nomen. 2d edit. Gen. 714. 9. 



Black : male with the face, cheeks, and mouth yellow ; mandibles rusty at 

 the tip ; female with the inner orbits, 2 dots beneath the antennae, a spot on 

 the cheeks, margin of the clypeus, and the mouth yellowish; tip of the 

 mandibles fuscous ; antennae incurved at the tip, fuscous, rusty beneath, 

 with the 2 or 3 basal joints whitish; thorax of the male with the breast, 

 neck, a broad line before the wings, a dot before them, and the lateral 

 sutures of the metathorax yellow ; of the female with the upper margin of the 

 neck, a line before, and a dot beneath the wings, yellowish-white ; scutellum 

 of the male with 2 yellow dots, of the female with red confluent ones ; 

 abdomen silky, with the extreme margin of the 6 terminal segments 

 obscurely chestnut ; legs moderate, red, 4 anterior with the coxae and tro- 

 chanters pale yellow, posterior with the trochanters pale yellow, with the 



