210 BRITISH ICHNEUMONS. 



Abdomen smooth, very finely punctate and distinctly shining, of ^ sub- 

 linear with white pubescence ; black with all the segments narrowly ferru- 

 gineous-margined. Legs black, with all the tibiae of the ? dull red and 

 its hind tarsi usually rufescent apically ; S with front legs, except femora 

 externally, whitish, and the hind tarsi rufescent apically. Wings with 

 piceous stigma. Length, 9--10 mm. 



This species is said to superficially resemble A;n/>/y/e/es oralorius ; {cf. 

 Kriech. Ent. Nachr. 1896, p. 357). It was first described by Gravenhorst, 

 from an example sent to him by Hope from Netley, and the type is pro- 

 bably still in the latter's collection, at Oxford ; Stephens says he found it 

 uncommonly, near London and in Shropshire, in June and July ; I know 

 of no recent captures in Britain and the species has not been bred. It is 

 of great rarity on the Continent, being recorded only from Prussia and 

 near Brussels, in July. 



ANISOBAS, JVesmael. 

 Wesm. Noiiv. Mem. Ac. Brux. 1S44, p. iii ; Bui. Ac. Brux. 1854, p. 137. 



Head of variable size ; mandibles somewhat stout, with the teeth usually 

 sub-equal in length ; clypeus deplanate, not discreted from the face ; genal 

 costa continuous ; epistoma with no inter-antennal tubercle; eyes sub-ovate, 

 with the internal orbits parallel. Antennae somewhat slender, inserted 

 high on frons. Thorax stout, strongly convex ; basal transverse sulcus of 

 the pronotum centrally intercepted by a tubercle or carina ; metanotal 

 areae complete ; coxal areae entire ; epicnemia centrally elevated, not 

 reaching beyond the callus. Abdomen lanceolate- or oblong-ovate, cen- 

 trally red, apically fasciated with white ; gastrocaeli and thyridii deep. 

 Posterior legs stout, the front ones relatively somewhat short ; tibiae sub- 

 mutic. Areolet large, broadly pentagonal ; radius short, not or hardly 

 apically curved. 



Eight palaearctic species are known, of which but one has been recorded 

 from Britain. 



I. hostilis, Grav. 



Ichnetiinon hostilis, Gr. Mem. Ac. So. Torin, 1820, p. 309; I. E. i. 339; Ste. 111. M. 

 vii. 171, 9. Aiiisobas hostilis. Thorns. O. E. xix. 2099; Berth. Ann. Soc. Fr. 1896, 

 p. 301, 6 9 . Var. A. rebellis, Wesm. Nouv. Mem. Ac. Brux. 1844, P- I45 ; Bui. Ac. 

 Brux. 1848, p. 68 ; lib. cit. 1854, p. 138,9; Thorns. O. E. xix. 2099; A. hostilis. 

 Thorns. Ann. Soc. Fr. 1888, p. 121, i. 



Head black ; cheeks somewhat dilated ; clypeus sub-truncate ; $ with 

 external and often the frontal orbits white-marked ; c? with internal orbits 

 white. Antennae setaceous, white-banded. Thorax black ; c? with cal- 

 losities before and beneath radix white ; areola sub-quadrate or transverse. 

 Scutellum gibbous, abruptly declived posteriorly, laterally carinate only to 

 its centre, nearly always white; post-scutellum dull and finely striate. Ab- 

 domen somewhat broad, black, with first three or second and third segments 

 red, the latter sometimes black-marked ; fourth to seventh, and rarely 

 third, broadly white-margined ; post-petiole aciculate, more strongly to- 

 wards its apex ; gastrocaeli somewhat large and deeply impressed ; second 

 and third segments not very strongly punctate, basally aciculate ; $ with 

 whitish genital valvulae and the fourth ventral segment plicate. Legs red; 

 coxae, trochanters, apices of hind tibiae and sometimes the sides of 



