BRITISH ICHNEUMONS. 97 



Doncaster, by Mr. W. G. Clutten. Tostock, Suffolk, in June and Septem- 

 ber, and Finborough Park, Suffolk, in October (Tuck) ; I'^airlight and 

 Guestling, Hastings ; Greenings, near Reigate, in June (Wilson Saunders) ; 

 Isle of Man, in 1869 (Walker, Entom. 1873, p. 432); Bristol, Box Hill, 

 Lewisham, Colwyn, Pitlochry (Beaumont). I have found the hibernating 

 females in tufts of Aim caespitosa, at Brede, near Hastings, in March, and 

 taken the males, at Eaton, near Norwich, and at Barton Mills, in June, as 

 well as females, by sweeping reeds, at Ipswich, in October ; it would 

 appear to be attached to marshy situations, which cannot be said of 

 Fidonia piniaria. 



15. plagiarius, Wesm. 



Ichmiimon plagiarius, Wesm. Rul. Ac. Brux. 1848, p. 47, ? ; Bridg. Trans. Ent. 

 Soc. 1S89, P- 4". i ; Berth. Ann. Soc. Fr. 1895, p. 243, S ?. 



Head black ; mandibles, clypeus, and a mark in centre of face, red ; 

 palpi and vertical lunulae white ; $ also has clypeus and internal orbits 

 white. Antennae of ? sub-filiform, piceous, white-banded ; scape red 

 beneath ; of $ entirely black. Thorax black ; pronotum and callosity 

 beneath, and in $ before, the radix, white ; areola transverse, sub-linear, 

 glabrous ; mesosternum thrice broader than long. Scutellum white ; 

 post-scutellum of ? red, of $ sometimes white. Abdomen somewhat 

 short, black ; segments one to three, and four laterally, red ; six to seven 

 of ? only, dorsally white ; post-petiole punctate throughout ; gastrocaeli 

 small ; terebra exserted. Legs red ; coxae trochanters and apices of hind 

 femora and tibiae blackish ; hind coxae simply punctate. Stigma and 

 tegulae piceous. Length, 6-7 mm. 



Bridgman took both sexes in the neighbourhood of Norwich, in August ; 

 on the Continent it has a restricted range from Hungary to Belgium, and 

 is certainly uncommon. 



16. derogator, Wesm. 



Ichneumon albiiiolalus, Gr. I. E. i, 507, S, excl. var. (piobabiliter). /. inciibitor, 

 var. 2, Gr. lib cit. 618, ?. /. derogator, Wesm. Nouv. Mem. Ac. Brux. 1844, p. 93 ; 

 Bui. Ac. Brux. 1848, p. 178 ; Thoms. Ann. Soc. Fr. 188S, p. no ; Berth, lib. cit. 1895, 

 p. 247, i ? ; Hohn. Ichn. Suec. i. 186, i. Barichneuiiion derogator, Thoms. O. E. 

 xviii. 1963, i, ? . 



Head black, shining, finely and sparsely punctate, somewhat broad 

 behind the eyes ; occiput elevated between posterior ocelli ; face prominent, 

 epistoma produced into a small obtuse tooth beneath scape ; ? clypeus 

 sub-distinctly separated, convex, glabrous, with a line of fine punctures 

 before the red truncate apex ; cheeks not longer than the basal breadth of 

 mandibles, which are stout, in 9 red and glabrous ; ? palpi piceous, with 

 the two apical joints of the maxillary fulvous \ vertical lunulae white ; $ 

 also has palpi, mandibles, clypeus, face, the frontal and a line at external 

 orbits, white. Antennae black, of $ filiform, apically obtuse, white- 

 banded, the scape sub-globose; of $ gradually attenuate, ferrugineous 

 towards apex, and scape sometimes white, beneath. Thorax shining, 

 black, with rather coarse and not very close puncturation ; mesonotum 

 deplanate in $ , sternauli wanting ; notauli distinct, and metanotum finely 

 rugose in ^ ; upper areae complete, areola sub-cordiform, longer than 

 broad, apically emarginate ; spiracles linear ; c^ has pronotum, lines at 



