BRITISH ICHNEUMONS. 43 



anus immaculate ; post-petiole centrally flat, of $ coarsely, of S oblicjuely, 

 striate or rugose ; lateral areae rugose and apical angles obtuse ; gastrocaeli 

 broad, deep and transverse, becoming oblic^ue apically ; intervening space 

 little more tban half width of centre of post-petiole. Legs black ; inter- 

 mediate femora of cj sinuate apically beneath ] tibiae more or less red, the 

 anterior laterally fulvous, especially apically in S ; hind ones darker, some- 

 times black towards apex ; anterior tarsi pale ; hind coxae of $ very closely 

 punctate, with an obtuse, shortly haired, stout tubercle or tooth, of 6 

 coarsely punctate, sub-carinate before apex. Wings somewhat clouded ; 

 stigma fulvous, tegulae piceous. Length, 15-20 mm. 



The male occasionally has the antennae entirely black, which form is 

 that of /. fionigator, Grav. The abdomen of both sexes is sometimes 

 black instead of castaneous, and examples are known with both abdomen 

 and legs quite black {cf. Trans. Ent. Soc. i88g, p. 410). Desvignes 

 describes a male with the abdomen black, the incisures only being fer- 

 rugineous. 



Stephens took the female in Coombe and Darenth Woods, in June ; 

 Bridgman records it from Ely. It is said to be scarce in Devon and not 

 found in Norfolk, though common enough in woods and fields in Sweden. 

 It has been bred from Alelitaea Athalia, Setifia mirita, and Trichmra 

 crafaegi on the Continent, where it is common. The female hibernates. 

 In the British Museum is an example bred from Plusia festucae. 



2. pistorius, Grav. 



Ichneumon pistorius, Gr. I. E. i. 231 ; Ste. 111. M. vii. 153 ; Zett. I. L. 359, i ; 

 Wesm Nouv. Mem. Ac. Briix. 1844, p. Si ; Holmgr. Ichn. Suec. i. 43 ; Berth. Ann. 

 Soc. Fr. 1894, p. 566, i ? . Steniihnen/non pistorius. Thorns. O. E. xviii. 1965, 6 9 . 

 /. inolitorius, var. a, Schr. F. B. , n. 2072. Var. /. deliratorius, Gr. I. E. i. 219, excl. J ; 

 cf. Wesm. Mem. couron. Ac. Belg. 1859, p. 26. Var. /. atroceruleus, Tisch. Stett, Zeit. 

 1S68, 9 . 



Like ^. ailpaior in size, conformation and sculpture. Head of $ entirely 

 black, of c? with the facial orbits usually broadly white. Antennae flavidous- 

 white-banded in both sexes. Thorax black, with usually a whitish line 

 before the radix ; $ also has pronotum and generally a callosity below the 

 radix white ; metathorax roughly punctate, with complete upper areae, 

 of which the areola is sub-quadrate or transverse. Scutellum flavidous- 

 white, strongly elevated in both sexes, and apically obtuse. Abdomen 

 dull, of $ sub-linear ; black, with the central incisures, and sometimes 

 the second segment of $, usually castaneous; apex immaculate; post- 

 petiole centrally striate or coarsely aciculate, its apical angles obtuse ; 

 gastrocaeli transverse, intervening space narrower than centre of post- 

 petiole, longitudinally rugose. Legs black, with intermediate femora 

 broadly sinuate beneath apex in $, slightly in ?; front femora whitish 

 below at the apex ; tibiae white, black at apex and before base, the an- 

 terior entirely white laterally; front tarsi generally with the first joint basally 

 white; hind coxae very closely punctulate, with narrow, indistinct scopulae. 

 Wings a little clouded ; stigma and tegulae red, latter sometimes whitish 

 in cj, fuscous in $ ; areola slightly narrowed above. Length, 15-21 mm. 



The second segment in both sexes is not infrequently castaneous or even 

 red ; the female has sometimes no white line before the radix, which form 



