202 BRITISH ICHNEUMONS. 



Var. /. atramentaruis, Gr. I. E. i. 397 ; Ste. 111. M. vii. 179 ; cf. Wesm. INIiJm. couron. 

 Ac. iV-lg. 1859, p. 48, i. Var. /. diigiilifes, Ste. 111. M. vii. 157, 6 9 ; cf- Mori. 

 E.M.M. 1902, p. 120. 



A shining species, with slender body and elongate legs. Head strongly 

 narrowed behind the eyes, verte.x somewhat emarginate, black; mandibles 

 slender, bidentate ; frontal orbits broadly white, the external sometimes 

 red-lined ; S also has the palpi, mandibles, clypeus, face, and usually a 

 genal patch, white or white-marked. Antennae slender, setaceous, white- 

 banded in both sexes, with tenth flagellar joint of ? quadrate ; $ rarely 

 has scape pale-dotted below. Thorax black ; of ? rarely with a dot before 

 the radix white ; of c^ with lines before and beneath the radix, and rarely 

 a patch on the metanotum, white ; areola quadrate or slightly elongate, 

 apically often incomplete ; costulae obsolete ; coxal areae sub-obsoletely 

 discreted ; apophyses distinct. Scutellum, and in S sometimes the post- 

 scutellum, white. Abdomen nitidulous, somewhat elongate, slightly bluish- 

 black, sericeous-haired ; the first or rarely the first three segments usually 

 margined, the sixth and seventh dorsally marked, with white ; post-petiole 

 finely aciculate or sub-rugose, apically glabrous ; gastrocaeli small and 

 superficial ; apical segments of $ nitidulous ; ventral segments two to four 

 of S with a white central fold. Legs slender, black ; tibiae broadly white- 

 banded ; anterior tarsi piceo-flavous, of ^ whitish with anterior coxae and 

 trochanters white. Wings with stigma fulvous and areolet narrowed above. 

 Length, 12-15 mm. 



The nitidulous black body and clear white markings of this species can 

 only be confused with those of the next-described. 



The variety /. cingnlipes^ Ste. {Inpunctiis, Berth.) has the anterior seg- 

 ments entirely immaculate ; it is recorded from Darenth AVood, in June. 

 The var. atramoitarhis has the antennae entirely black and the sixth, as 

 well as sometimes the second, segment immaculate ; this variety was 

 originally taken by Hope, at Netley, and was considered by Stephens, who 

 found it occasionally about London but " more abundantly " in Salop, in 

 June, as rather uncommon. 



This handome insect is probably somewhat common with us ; it has 

 occurred in the vicinity of the metropolis, at the end of June ; near 

 Huddersfield and Leeds, in June ; in Essex ; at Plym Bridge and Bick- 

 leigh, in Devon, where Parfitt says it is not common, occurring near woods 

 and thick hedges in July, towards the end of September ; in South Wales, 

 in September ; at Mousehold Heath, Norwich ; in the district of Land's 

 End ; and at Peppering, near Hastings ; I possess an example captured 

 by Piffard, at Felden, in Herta. It has been bred from Gonepteryx 

 rhamni, Saturnia pavonia and Aplecta tiebulosa ; and on the Continent, 

 where it is somewhat widely distributed and frequents humid situations, 

 from Noctua brwinea and N. festiva ; the female is said to hibernate 

 among moss. 



21. margineguttatus, Grav. 



Ichneitmon fnargineguttaiits, Gr. I. E. i. 393, i . Aniblyleles inarginegiitta/iis, Wesm. 

 Nouv. Mem. Ac. Brux. 1844, p. 121, excl. ? ; Mem. couron. Ac. Belg. 1859, p. 48 ; 

 Holmgr. Ichn. Suec. ii. 221 ; Thorns. Ann. Soc. Fr. 1888, p. 116; Berth. ///'. cU. 1S95, 

 p. 650 ; Thorns. O. E. xix. 2094, i ? . Var. A. iwvitius, Wesm. Bui. Ac. Brux, 1854, 

 p. 86, (5 ? . 



Very like the last species. Head narrowed behind the eyes ; vertex 

 . somewhat emarginate ; cheeks and temples strongly punctate ; clypeus 



