Metiisais.] BRITISH ICHNEUMONS. 233 



facial, and sometimes a dot at the frontal, orbits flavous. Antennae of $ 

 entirely red at least beneath and exactly as long as, of 9 three-quarters 

 the length of, the body. Thorax stout and innnaculate in both sexes ; 

 notauli obsolete and very broad ; metanotum confluently and rugulosely 

 punctate to its base ; areola basally distinct and ])aralk'l-sided ; petiolar 

 area basally entire and very strong ; spiracles somewhat small and quite 

 circular. Scutellum black and distinctly punctate. Abdomen black, stout 

 and nitidulous, laterally a little rounded in both sexes, finely and distinctly 

 punctate and not reticulate throughout, smoother a})ically ; basal segment 

 hardly twice longer than apically broad, strongly canaliculate to near the 

 centrally subglabrous apex, laterally coarsely striate towards the base, just 

 before which on either side it is abruptly constricted ; second and third seg- 

 ments quadrate, the following transverse ; terebra exactly as long as the body. 

 Legs not elongate, red with the hind tarsi and their straight tibiae entirely 

 nigrescent ; ^ coxae not paler; tarsal claws sparsely but distinctly pecti- 

 nate. Wings normal, hardlv cloudetl ; stigma and tcgulae piceous; areo- 

 let distinctly petiolate and in J rarely entirely wanting, emitting the 

 recurrent nervure from its centre ; nervellus curved and intercepting 

 the subopposite anal nervure only slightly below its centre. Length, 

 8 — 1 1 1 mm. 



The type is in my own collection. 



Gra\enhorst describes the terebra of J/, iiiipnssor as of the same length 

 or longer than the body ; Schmiedeknecht has given it as of 1 5 mm. to 

 the 1 2 mm. body ; and correctly assigned it a black-faced J ■ Conse- 

 quently the former almost certainly mixed two species under this name 

 and the latter has taken that with the longer terebra as representing it. I 

 believe the species here described to be the other form of Gravenhorst's 

 description hitherto looked upon in Britain as the more typical one. It 

 is altogether a stouter insect than that with the longer terebra and second 

 segment longer than broad, and the colour of the J face is distinct, as 

 also in both sexes is the frontal sulcus, from all the others of the genus, 

 though doubtless not dissimilar from J/, aimilicu/aliis, Szepl., which has the 

 terebra shorter, tegulae flavous, etc. One of my males has, like /.. dt/ec- 

 tiva, Gr., the areolet entirely wanting. 



This species is tliat recorded in Iiritain luukr the name J/, i/iipnssor, 

 as noted under the latter, from Essex by Harwood, as connnt)n in Nor- 

 folk by Hridgman and occurring at liickleigh and ."NLarsli .Mills in Devon in 

 August and September by Bignell. It lias, however, not been bred hitherto. 

 On loth June, 1903, Duncan bred two males and two females from Sisia 

 a/Z/tv/orw/j' in the Bromar District ; and on 9th and i8th of July, 1902, 

 Thornhill kindly sent me three males and six females bred by him at 

 Bloxworth in Cambs, from (probably Scsi'a bembcciformis in) osier stumps. 

 1 also possess a female captured by Beaunu)nl at IMumsiead at the end of 



