76 BRITISH ICHNEUMONS. [Phygadeuoft. 



whitish membrane ; post-petiole carinate and finely aciculate, slightly im- 

 pressed centrally, with the sides straight ; second segment nitidulous and 

 shorter than the third ; terebra half the length of the abdomen. Legs 

 red ; hind pair with tarsi, apices of femora and of tibiae, nigrescent. 

 Wings clouded ; stigma black, basally white ; radix white, tegulae black ; 

 nervellus antefurcal. Length, 7 mm. 



Thomson (O. E. 1241) says P. riifulus agrees with P. afflictorm every 

 way, excepting that its abdomen is red-yellow ; and I here treat the latter 

 as a very distinct variety, having the metathorax more coarsely rugose, the 

 areola nearly semicircular, and all the coxae and trochanters, together with 

 the bases of the hind tibiae and, above all, the abdomen centrally, black. 



P. afflicior closely resembles Acanthocryptus nigrita in size and conforma- 

 tion, but the terebra is as long as the depressed and elongate petiole, the 

 post-petiole is bicarinate, the second ? segment is smooth and shorter 

 than the third, the second $ segment is sub-scabrous and hardly longer 

 than the third, the $ antennae are black, the petiolar area reaches beyond 

 the centre of the metathorax, and its areola is transverse. 



It were, perhaps, better placed in Acanthocryptus, but the flagellum is 

 bicoloured, the apophyses smaller and body less nitidulous. 



This species, which occurs not uncommonly on the Continent in June, 

 has been bred by Kawall from Hypera rui/iicis ; he observed a pair in cop. 

 for fifteen seconds, on July 23rd (cf. Stett. Ent. Zeit. xix. p. 67), but did 

 not describe the male. There appear to be no British records of this 

 species, though it has long stood in our catalogues ; I am able to confirm 

 it as indigenous, however, on the strength of females, which I captured in 

 the Ipswich district of Suffolk in 1894, in the marshes of Bungay Common, 

 early in June, 1900 ; and two found by Tuck, in Finborough Park, in the 

 same county, during the following August. 



3. nycthemerus, Grav. 



PItygadeiion nycthenients, Gr. I. E. ii. 647 ; Tasch. Zeits. Ges. Nat. 1865, p. 49, i ; 

 Thorns. O. E X. 943, 6 ? . 



Head sub-buccate, black ; frons densely and finely punctulate ; $ with 

 the apex of the face, clypeus and cheeks flavous ; $ with the whole 

 mouth, face and cheeks white ; clypeus distinctly discreted, broad and 

 short. Antennae of S setaceous, very much shorter than the body, with 

 the scape white beneath. Thorax immaculate ; mesonotum densely and 

 finely punctate ; metathorax very dull, with areola a little broader than 

 long ; petiolar area parallel-sided, discreted and transversely rugulose 

 towards the base ; apical margin of the sub-quadrate dentiparal areae 

 callosely elevated, but apophyses wanting ; spiracles small and circular. 

 Scutellum black. Abdomen not broader than the thorax, fusiform, finely 

 and closely punctate throughout ; generally black, but sometimes with the 

 three basal segments more or less castaneous ; anus pure white ; post- 

 petiole carinate, sub-quadrate and hardly longer than broad, a little broader 

 than the slender and elongate petiole ; terebra as long as the basal seg- 

 ment. Legs somewhat slender, of ? red, of S flavous, with the anterior 

 stramineous and their co.xae and trochanters white ; hind coxae, tro- 



