males have tlie habit of the Pompili, but the neuration of the 

 winn-s is hke that of Nysson : there is, however, a combination 

 of characters which renders this a strongly marked genus ; the 

 narrow collar, the striated postscutel more or less spined, and 

 bearino' an escutcheon-shaped impression, and the large apical 

 joint of the anterior tarsi characterize the females, whilst the 

 males are distinguished by two small remote spines at the apex 

 of the abdomen, and both sexes have a strong tooth at the 

 apex of the posterior thighs, which, although distinct enough, 

 is not readily seen except in profile. 



The only British specimen 1 have seen of this genus is the 

 one figured, but I have heard of Mr. Kirby having another, 

 and on the authority of the " Systematic Catalogue," the sexes 

 of A. bimacidata were recorded in the Guide. As I have Ger- 

 man specimens, I shall add the characters of the latter that it 

 may be the more readily identified. 



1. A. Kennedii Curt. Brit. Ent. -pi. 584. 



Female black, very thickly and finely punctured, and clothed 

 with very short ochreous pubescence; anterior margin of the 

 clypeus and trophi ochreous and ferruginous, tips of mandibles 

 piceous; antennee dark fuscous, underside of basal joint fer- 

 ruginous, postscutellum bearing an elongated escutcheon, the 

 sides obliquely furrowed ; two basal segments of abdomen and 

 a small portion of the base of the 3rd rufous, with the edge of 

 the 2nd silky white on the sides; wings iridescent, yellowish, 

 nervures and marginal cell brown, as well as 2 spots beneath, 

 forming an interrupted fascia: legs pitchy, anterior tarsi tibiae 

 and tips of thighs ferruginous, the tarsi and apex of hinder 

 tibiiE brown. 



I have the gratification of naming this unique insect after 

 my friend Benjamin Kennedy, Esq., of Clapton, who was with 

 me when 1 beat it out of an Oak growing in a hedge near 

 Hastings, in August 1823. 



2. A. bimaculatus Panz. 51. 4. $. — Pompilus spinosus Panz. 

 80. 17. var.l — Sphex fuscatus Panz. 51. 3. c?. 



Male black, shining, face below the antennas silvery with 

 pubescence ; clypeus, a portion of the inner margin of the eyes, 

 underside of basal joint of antennae, a line before the wings, 

 2 spots on the scutellum, and one on each side the 2nd seg- 

 ment of abdomen cream-colour, apex ferruginous ; legs ferru- 

 ginous, darker outside, coxae and trochanters black, the latter 

 spotted with white, anterior tibiaj inside and the posterior at 

 the base whitish; nervures and stigma brown, with a faint 

 transverse cloud : expanse 4| lines. Female larger, 6^ lines 

 in expanse; the face, thorax," legs, &c. are similarly coloured, 

 but the 1st and basal half of the 2nd segment of abdomen are 

 rulous, the latter having the 2 cream-coloured spots ; the apex 

 is black and the cloud on the wings distinct. 



The Plant is Sugina procumhens (Chickweed Breakstone). 



