BRITISH ICHNEUMONS. 65 



beginning of September at Mount Edgcumbe, and in Cann Wood, in 

 Devon ; Beaumont at Lewisham, Boxhill and Oxshott ; Hamm at Reading ; 

 Sladen bred it from an unknown host at Watford, in May ; Bridgman 

 found the 6 at Norwich, and Mr. F. H. Peachell has sent it to me, bred on 

 20th April, from Taeniocavipa gothica pupa, found at a poplar, near High 

 Wycombe, Bucks. ; Mr. Adkin has bred it from Retinea pinicolana and 

 Rannoch Eupithecia helveticata ; I have examined a male of this species 

 in the British INIuseum, labelled " From Orthosia mshibilis" and have 

 captured examples at Lyndhurst and Ipswich. 



13. coruscator, Lmn. 



Iclmcumon corrnscator, Linn. F. S. 402 ; Gr. I. E. i. 133 ; Ste. 111. M. vii. 133, c? ; 

 Wesm Nouv. l\Iem. Ac. Brux. 1S44, p. 71 ; Bui. Ac. Brux. 1S48, p. 170 ; Berth. Ann. 

 Soc Fr. 1895, p. 265, (J ? . /. gasterator, Ste. 111. M. vii. 199 ; cf. Mori. E.M M. 1902, 

 p. 121, ? . /. pyrenaeus, Tisch. Stett. Zeit. 1882, <J . Var. /. alacer, Gr. I. E. i. 533, i . 

 Var. /. liiridtis, Gr. I. E. i. 406 ; Ste. 111. M. vii. 180 ; /. biiiolatus, Desv. Cat. 23, <J . 



9 . Head strongly punctate, a little narrowed behind the eyes, black ; 

 mandibles frontal orbits, and rarely the margin of clypeus, red, the last 

 with a few scattered punctures. Antennae filiform, stout, fourth joint 

 quadrate ; white-banded. Thorax black, strongly punctate ; areola longer 

 than broad, sub-hexagonal. Scutellum apically red. Abdomen red 

 throughout, with petiole more or less black basally ; post-petiole glabrous 

 and shining, sometimes obsoletely aciculate ; gastrocaeli sub-obsolete ; 

 terebra exserted. Legs stout, black ; anterior coxae and femora some- 

 times piceous, their tibiae laterally red ; hind tibiae not or hardly white- 

 marked, and hind coxae with normal scopulae. Wings a little clouded, 

 stigma and tegulae red or piceous. 



$ . Body slender and shining. Head black ; palpi and mandibles 

 partly red ; clypeus, face laterally only, frontal and external orbits, flavous ; 

 clypeus slightly rounded in front. Antennae elongate, black, paler with 

 scape usually flavous below ; not centrally white-banded. Thorax entirely 

 black ; areola semi-hexagonal. Scutellum convex, black, or apically 

 flavous. Abdomen shining, black, with short silky pubescence ; segments 

 two and three sometimes red-margined; ventral surface flavous; post- 

 petiole narrow, glabrous, shining ; gastrocaeli nearly wanting. Legs 

 black ; anterior tibiae beneath, and hind ones at the base, flavidous or 

 red. Length, 8-14 mm. 



There are two well-marked S varieties of this species, which so materially 

 differ from the type as to have been described as distinct. 



Var. a/acer differs in having the mouth, face, scape beneath and apex of 

 scutellum testaceous ; segments two and three testaceo-rufous, often with 

 more or less infuscate dorsum ; the anterior femora fulvous, black above ; 

 tibiae testaceous, hind ones apically black. This is the commonest form 

 in Britain. 



Var. luridus has the face, pronotum, callosities at radix, marks on, or 

 often the whole of, metanotum flavous ; scutellum and post-scutellum 

 pale ; abdomen flavous, with petiole and segments five or six to seven 

 black ; anterior legs fulvous, hind ones black, with basal half of tibiae 

 flavous. 



[/. gasterator, Ste., ? . Black, shining, punctate. Head smoothly and 

 thickly punctate, shining, buccate, black, dilated behind the eyes ; mouth 



