BRITISH ICHNEUMONS. 49 



post-petiole broad, shagreened, with lateral foveae and apical depression, 

 the angles obtusely rounded ; second segment slightly elongate, space 

 between the transversely linear gastrocaeli very narrow ; terebra slender, 

 length of the sixth and seventh segments. Legs red, coxae white-marked ; 

 trochanters, hind tarsi and apices of hind femora and tibiae darker ; hind 

 coxae finely and closely punctate, more or less scopuliferous. Wings 

 hyaline, radix and tegulae ferrugineous in ? , darker in <$ ; stigma piceous ; 

 areolet narrowed above. Length, 7-11 mm. 



The base and apex of the abdomen vary slightly in colour ; the apical 

 margin of the second segment of S is often alone red. It may be at once 

 recognised by the red thorax and far-exserted terebra of the ? , and in both 

 sexes by its broad post-petiole and almost shining mesonotum ; the ? anus 

 and the S antennae are not pale-marked. 



Stephens found his /. rufescens, near London, in June ; and I have seen 

 a ? 6". picdis in Mr. Chitty's collection, taken in September, at Ilfracombe. 

 This species has several times been bred from Cidariafulvaia, as well as 

 from Macaria liturata, Oaieria dispar and Thera juniperata. On the 

 Continent, it has a wide range from France to Sweden and Russia. Dr. 

 Chapman has sent me the ? , from Switzerland, bred in August, from some 

 species of Thera which fed on larch trees. 



9. castaneus, Grav. 



Ichneumon castaneus, var. 2, Gr. I. E. i. 559, ? ; Wesm. Nouv. M^m. Ac. Briix. 

 1844, p. 77 ; Bui. Ac. Brux. 1848, p. 171, excl. var. 5 ; lib. cit. 1855, p. 394 ; Holmgr. 

 Ichn. Siiec. i. 197 ; Berth. Ann. Soc. Fr. 1895, p. 565, c5 ? ; cf. Thorns, lib. cit. 1887, 

 p. 16. Sleniihiieumoii castaneus, Thorns. O. E. xviii. 1967. Exephanes rufoniger, 

 Tisch. Stett. Zeit. 1879, 9 ; cf. Kriech. Ent. Nachr. 1894. Var. /. castaneus, var. 4, Gr. 

 I. E. i. 559, ? . Var. /. pulchricornis, Gr. lib. cit. 564, ? . 



The thorax is not red-marked. Head narrowed towards the mouth, 

 black ; mouth partly red, frontal orbits usually narrowly testaceous ; $ also 

 with palpi, mandibles, clypeus, face and genal orbits usually flavous. An- 

 tennae slender, filiform-setaceous, blackish with the central band white only 

 in the $ and the basal flagellar joints often entirely or partly red ; of $ sub- 

 nodulose with scape white, and flagellum more or less red, beneath. Thorax 

 dull ; of $ entirely black, of $ with usual humeral callosities flavous ; 

 metanotum with three, or in $ five, areae of which the areola is sub- 

 quadrate and apically emarginate. Scutellum towards its apex or entirely 

 rosy, of $ flavous ; post-scutellum often concolorous. Abdomen ovate- 

 lanceolate, of $ sub-linear ; dull, entirely rufescent or with petiole and 

 anus infuscate ; anus immaculate ; post-petiole finely scabrous, not longi- 

 tudinally sculptured ; second segment longer than broad, very closely 

 punctate ; gastrocaeli strongly transverse, the intervening space being 

 closely punctate and a little more than half width of centre of the post- 

 petiole ; terebra distinctly exserted. Legs red ; coxae, trochanters and 

 sometimes hind femora black ; anterior trochanters of $ usually stra- 

 mineous ; hind coxae of $ with elongate scopulae. Wings a little clouded, 

 stigma piceous or flavescent ; tegulae ferrugineous, in $ flavous ; areolet 

 narrowed above. Length, 9-12 mm. 



The structure is nearly identical with that of .S". ochropis. The extent of 

 black and red in the $ varies considerably in the legs, abdomen and basal 

 third of the flagellum. The var. pulchricornis has the antennae tricoloured 



