138 HAUSTELl.ATA. l.EPI UdPTF.RA. 



This insect occurs iu various parts of tiie country, but nowhere 

 in greater abundance than on Epping-forest, near Wanstead, where 

 it may be readily obtained by diligently searching, towards the end 

 of June, the trunks of the fine aspen trees, which form so conspicuous 

 an object on that part of the forest. I have also frequently met 

 with the insect at Coombe-wood. 



Sp. 2. Crabroniformis. Capite atro, thorace maculis duabus ferrugineus, coUari 



Jlavo, abdoviine Jlavo cingulis duabus atria. (Exp. alar. 1 unc. 6 — 8 lin.) 

 Sp. Crabroniformis. Lewin. (Linnean Transactions), iii. pi. 3. f. 6 — 10. — 

 Tr. Crabroniformis. Steph. Cdtal. 



Head brown ; a white streak before the eyes : palpi fulvous yellow, with a few 

 black hairs at the base externally : antennae black, fulvescent at the base be- 

 neath : thorax glossy brown, with a narrow yellow collar anteriorly, and a dull 

 yellowish spot posteriorly on each side : abdomen yellow, with the first, second, 

 and fourth segments, and a broad margin to the third, black; the sides of the 

 fourth with a yellow patch : femora dusky-brown, glossy : tibia? rich fulvous, 

 spotted with yellow beneath : tarsi fulvous : wings above, with the nervures 

 and m.argins ferruginous^ and a narrow abbreviated transverse band of the 

 same colour on the anterior ; beneath rather fulvescent : cilia brownish. Male 

 smaller and more slender, the abdomen of a deeper colour, and the antennae 

 serrated internally. 



This varies considerably in colour, arising from the width of the black margins 

 of the abdominal segments. 



Caterpillar whitish, with a brown spot on several segments near the legs : it feeds 

 under the bark of the sallow fSalix caprea). 



Not very common, and rather later in the time of its appearance 

 than the foregoing. I have only met with it occasionally at Darenth- 

 wood in the beginning of July ; though during that month, in 1817. 

 I saw it in profusion flying heavily along, on the south-west border 

 of the wood. " A single pair taken near Newcastle." G. Wailes, 

 Esq. 



Genus XXX. — ^geuia, Fabncins. 



Antenna: long, slender, gradually increasing in size nearly to the apex, which is 

 slightly curved and acuminated ; in the males they are slightly ciliated, sub- 

 serrated, or pectinated : palpi longer than the head, divaricating, gradually 

 reflexed, thickly clothed beneath with scales and long hair; the terminal joint 

 somewhat naked and acuminated : head moderate : clypeus densely clothed 

 with flat scales: thorax and abdomen rather slender, the latter with a large tri- 

 lobed tuft, variable in form at its apex : luiiigs transversely covered with scales 

 at the tip. 



