30 BRITISH ICHNEUMONS. 



at radix white in 3 ; metanotum strongly punctate ; areola smoother, sub- 

 quadrate or semi-elliptic, apically slightly emarginate. Scutellum entirely 

 black. Abdomen narrow, black with a slight bluish reflection ; post-petiole 

 finely aciculate ; second segment longer than broad ; gastrocaeli normal, 

 somewhat deep, intervening space sub-aciculate. Legs black ; anterior 

 tibiae internally paler ; hind coxae closely punctate, with the scopulae 

 practically absent ; c? legs marked with red. Wings slightly clouded ; 

 tegulae piceous ; stigma ferrugineous ; areolet wide above. Length, 

 1 2- 1 6 mm. 



Similar to C. bilineatus but easily distinguished — besides the points given 

 — by the areolet, which is very much broader above. From C. comitaior 

 it may be known by the longer terebra and second joint of the flagellum, 

 the hardly indicated $ coxal tufts, and the ferrugineous stigma ; the $ differs 

 in having joints 5-17 of the flagellum with raised carinae and in the legs 

 being red and black. The ? variety, /. percussor, has the hind femora and 

 tibiae for the most part red. 



In Norfolk it has once occurred, at Eaton, in July. Col. Yerbury has 

 taken it at Loo Bridge, Co. Kerry ; Lufl', in Alderney ; Piffard, at Felden, 

 in Herts ; Bignell, in the New Forest ; Essex ; and Bairstow records it 

 from the neighbourhood of Leeds, bred from Taeniocampa gothica. 



ID. bilineatus, Ginel. 



Ichneumon luHiieatits, Gmel. S. N. i. 2698, $ ; Gr. I. E. i. 127 (part) ; Ste. III. M. vii. 

 132 ; Wesm. Nouv. Mem. Ac. Brux. 1844, p. 26 ; Bui. Ac. Brux. 1848, pp. 145, 336 ; 

 M^m. couron. Ac. Belg. 1859, p. 12 ; Holmgr. Ichn. Suec. i. 35 ; Berth. Ann. 80c. Fr. 

 1894, p. 554, (J ? . /. coinitator, Sulz. Gesch. 1776, ? , Coelichuetimon biliueattis, 

 Thorns. O. E. xviii. 1908. 6 ? . 



A rather large black species, with bluish reflection. Head evenly and 

 strongly punctate in front, finely behind ; cheeks and temples inflated ; 

 clypeus sub-sinuate apically ; frontal, and a dot at vertical, orbits white, $ 

 also with palpi, mandibles above or throughout, a line at the external orbits, 

 sides of clypeus and of face, white. Antennae setaceous, of $ strongly 

 dilato-compressed and white-banded, of $ with scape usually white, and 

 flagellum rufescent, beneath. Thorax stout, entirely black in ? , pronotum 

 and lines at radix white in c^ ; mesonotum finely and distinctly punctate, 

 with no notauli ; metathorax finely scabrous, the upper areae complete and 

 smoother ; areola transverse, nearly glabrous and apically emarginate. 

 Scutellum usually entirely black, rarely laterally, not basally, white-marked ; 

 flat, with individual punctures distinct. Abdomen immaculate, slightly 

 bluish-black, apically shining ; post-petiole aciculate -punctate ; second 

 segment sub-quadrate ; gastrocaeli large and deep, the intervening space 

 sub-striolate. Legs black ; anterior femora and tibiae sometimes ru- 

 fescent ; hind coxae sparingly punctate, with no scopulae. Wings slightly 

 clouded ; stigma and tegulae nigro-piceous ; areolet sub-deltoid, the sides 

 nearly coalesced above. Length, 12-17 i'^""^- 



The clypeus on either side is sub-sinuate ; with a distinct vertical dot ; 

 scutellum, except apically, coarsely and strongly punctate. The ? has a 

 small elevated ridge on the inner margin of the posterior coxae beneath ; 

 the cheeks are buccate ; the $ flagellum has joints two to fifteen with 

 raised carinae : which points are distinctive. 



It is similar to C. Ihieator^ but the head is more tumidous, and not 



