114 ma:ndibulata. — hymenoptera. 



This magnificent insect occurs in various parts of Britain, from 

 the end of July to the middle of September, but, although greatly- 

 diffused, is nevertheless very rare : it has been frequently found in 

 and near London, in Kent, Berks, Wilts, Norfolk, near Edinburgh, 

 Exeter, and Gloucester. 



Sp. 2. bizonatus. Plate xxxvi. upper left fig. — Capite nigra, macula pone 

 oc7ilosutrinquefiaud, abdo?nine nigra, segmentis2-do et 7-mo et basi S'vifiavis. 

 (Long. corp. ^ ovip. incl. 12 — lejlin.; Exp. Alar. ? 18—21 lin.) 



Si. bizonatus. Stcph. Catal. 342. No. 3998. 



Head black, pubescent, with a large glabrous yellow spot at each side behind 

 the eyes, and an obscure one on the clypeus ; ocelli black ; thorax black, 

 immaculate ; abdomen black, Avith the 2nd and 7th segments entirely luteous 

 above, with the base of the 8th and the appendage to the 9th the same, this 

 last segment totally black ; femora black, anterior pair with the extreme tip 

 luteous ; tibiae and tarsi also luteous, the posterior tibia black at the apex ; 

 antennas luteous ; wings hyaline, with the nervnres and stigma pale testa- 

 ceous; ovipositor black. 

 I have several examples cf this fine insect — perfectly agreeing 



■with each other — that were taken in and near London in August. 



+Sp. 3. augur. Capite fuscOj posiice latefiavo. (Long. corp. 34 lin. ; Exp. Alar. 

 2 unc. 1 lin.) 



Si. augur. Klug. — Donavan, v. xiii. pi. 440. — Steph. Catal. 342. No. 3999. 



Head fuscous, yellow entirely behind the eyes, the latter fuscescent; thorax 

 brownish-yellow above, blackish beneath, with a large yellowish patch 

 beneath the wings ; abdomen yellow, with the 3rd, 4th, and 5th segments 

 entirely, and the margins of the 6th and 7th, black ; beneath brownish, 

 except the last segment, which is yellow; legs yellow, posterior femora 

 brownish at the base, the hinder tibiae fuscous at the apex ; wings yellowish, 

 hyaline, nervures and stigma ferruginous; antennte yellow. 



Male with the basal joint of the antennte fuscous ; the abdomen tawny, with 

 its base and apex black; the legs fuscous, with the base of the tibiae and 

 tarsi sligfeiy yellowish. 

 Donovan gives this as a British species, but I have not yet seen 



an example. 



Sp. 4. Juvencus. Capite atro cceruleo immaculato, abdomine atro-cwruleo, ant 

 rtifo-fulvo basi (^apiceque swpissime) atro cceruleo. (Long. corp. $ 7 lin. — 

 1 xmc. 4 lin. ; ? ovip. incl. 6 lin. — 1 unc. 6 lin.; Exp. Alar. $ 10 lin — 1 unc. 

 8 lin. ; $ 9 lin. — 2 unc. 1 lin.) 



Si. Juvencus. Linne. — Curtis, v. vi. pi. 253 $ and 9 — Steph. Catal. 342. 

 No. 4000. 



Head punctate, villose, deep immaculate blue-black ; mandibles black ; ocelli 

 fulvous ; thorax also deep blue-black, villose and punctate ; abdomen 



