208 MANDIBULATA. — HYMENOPTERA. 



Sp. 1. porrectorius. Niger, segmentis intermediis ryfis, hasi nigra, margine 

 alhido, pedibus rufis, coxis albo nigroque maculatis, tibiis posticis apice nigro, 

 scutello antennarum annulo, maculisque thoracis et capitis albis, (Long. corp. 

 3§— 5 lin. ; Exp. Alar. 4§ lin.) 



Ic. porrectorius. Fabricius. — Isch. porrectorius. Steph. Nomen. 2d edit, 

 col. 137. 



Black : palpi long, pale straw-colour ; clypeus, orbits, gense, and the face 

 more or less whitish-yellow; antennae with the 2 basal joints fulvous 

 beneath, about the 15th to 18th white; thorax with the margins of the neck, 

 the lateral edges of the collar, 2 dots or longitudinal lines on its base, a dot 

 beneath the wings, 2 behind, 2 others between the anterior and middle coxae, 

 a streak behind the scutellum, and a spot on the metathorax, and the scu- 

 tellum yellow-white ; abdomen with the basal segment black, white at the 



1 tip, the 4 next red, with their margins white, and their base frequently black, 

 the remainder black, with the margins faintly palish ; legs slender, long, 4 

 anterior pair testaceous, the coxae and trochanters white, the former below 

 and with a spot exteriorly and on the trochanters black ; posterior testa- 

 ceous, with the coxse and trochanters black, and sometimes with a white 

 apical dot ; tarsi fuscous, with the 2-4 joints white. 



The white ring on the antennae is sometimes wanting. 

 Not very common : taken at Darenth wood, near Hertford, and 



in Norfolk, in June and July. 



Sp. 2. sannio. Niger, segmentis anterioribus testaceo-marginatis, tibiis femo- 

 ribusque rufis, posticis apice nigricante, scutello, maculis capitis thoracisque 

 annulo antennarum et tarsorum posticorum albis. (Long. corp. 85 — 4 lin.; 

 Exp. Alar. 6 lin.) 



Isc. sannio. Gravenhorst, i. 646. — Steph. Nomen. 2d edit. col. 137. 



Black : mouth, orbits, and facial spots whitish-yellow ; mandibles black at the 

 tip; antennae with the basal joint ferruginous beneath, the 15th to 17th 

 white ; thorax with the margin of the neck, a line before the wings, one 

 beneath the anterior pair, and another below the posterior, a transverse line 

 under the scutellum, and a large transverse trilobed spot at the base of the 

 petiole, and the scutellum, white; abdomen with the margins of the 3 basal 

 segments reddish-white, the 4th and 5th with their edge obscurely reddish; 

 legs fulvous, with the 4 anterior coxae black, and their trochanters yellow, 

 with the base fuscous ; posterior coxae black, their trochanters black, with 

 the tip ferruginous ; posterior femora fuscous, with the base ferruginous ; 

 tibia black at the tip, tarsi whitish, with the 1st and 5th joints fuscous. 

 Taken with the preceding, of which it may prove a variety. 



Genus XLI.— STILPNUS, Gravenhorst. 



AntenncB moderate, or short, porrect, sometimes curved at the tip, rather stout, 

 composed of 16 to 20 joints; Aeai short, transverse; eyes o^?i\, prominent; 



