Fhygadeuon.] BRITISH ICHNEUMONS. 75 



not elongate, genal sulcus somewhat deeply impressed. Antennae of 9 

 filiform, not very stout nor apically incrassate, half length of body ; basally, 

 or except apex, ferrugineous ; always red, with the scape fulvous beneath. 

 Thorax immaculate and sub-pubescent ; notauli short but distinct ; nieta- 

 thorax rugose, with complete areae ; areola sub-hexagonal and broader 

 apically ; petiolar area reaching beyond the centre, somewhat concave, 

 strongly nitidulous and imperfectly discreted ; apophyses acutely dentate, 

 spiracles very small and circular. Scutellum black. Abdomen glabrous 

 and shining, elongate-fusiform, as broad as the thorax ; red or castaneous, 

 with only the first segment, and sometimes the $ anus, black ; six and 

 seventh usually fiavous-margined ; post-petiole deplanate and nitidulous, 

 with no carinae, longer than broad, especially in the c^, its spiracles pro- 

 minent and sides straight, though slightly divergent ; third segment hardly 

 shorter than the second, cfjipleurae narrow and spiracles some distance 

 from the margin ; terebra infuscate and a little shorter than the abdomen. 

 Legs normal, red ; hind coxae, except usually their apices and the hind 

 tarsi, nigrescent. Wings more or less clouded ; radix stramineous, tegulae 

 red or testaceous ; areolet small ; stigma broad, emitting the radial nervure 

 from almost before its centre ; nervellus antefurcal. Length, 5-8 mm. 



The hind coxae are sometimes entirely red and the length of the terebra 

 appears to be variable. 



The broad stigma, small areolet, discreted clypeus, prominent epistoma 

 and the conformation of the petiolar area, will distinguish this species 

 from the whole of the remaining species of the genus. 



Scarce. Taken in June, near London (Stephens) ; Acomb Wood, near 

 York, in 1881 (Wilson, Yorks. Nat. Un. 1882, p. 104). It appears to be 

 very rare in Britain ; I only possess females found by Bignell, at Exeter, 

 on 2nd October, 1885 ; it is, however, not uncommon on the Continent, 

 where Gravenhorst took it in July, flying around plants infested with 

 Aphides and their attendant Syrphid larvae. I am of opinion that it was 

 on the strength of specimens of this species that Marshall erroneously 

 introduced Hemiteles pullator into our fauna ; there is a female, under the 

 latter name, in his collection (in Brit. Mas.) from Leicester. 



2. rufulus, Gmel. 



Ichneiiiiwn rufulus, Gmel. S. N. i. 2717. Cryptus rufulus, Gr. I. E. ii. 622. 

 Phygadeuon rufulus, Tasch. Zeits. Ges. Nat. 1865, p. 25, ?. (?) P. affluior, Gr I. E. 

 ii. 642 ; Tasch. Zeits. Ges. Nat. 1865, p. 38, 9 ; Thorns. O. E. x. 942, i 9 ; Medophron 

 niger, Brisch. Nat. Ges. Danz. 1882, p. 344, 9 . 



Head black ; face somewhat narrow, clypeus distinctly discreted. An- 

 tennae filiform, not very stout, with the third joint more than twice longer 

 than broad ; pale ferrugineous, with the scape black and the apical half of 

 flagellum infuscate. Thorax immaculate and closely punctate throughout, 

 dull with obsolete notauli ; metathorax slightly rugose and shining, with 

 the areae complete and the costae well-defined ; areola hexagonal, some- 

 times a little longer than broad ; petiolar area discreted and nearly vertical; 

 apophyses stout and acute, spiracles circular. Scutellum black. Abdomen 

 black, with the second and third segments, the apex of the first and more 

 or less of the fourth, red ; seventh, and sometimes also the sixth, with a 



