18 Rev. T. A. Marshall's monograph oj 



TestaceoiTS ; antennfe, stemmaticiim, occiput, lobes of the meso- 

 thorax, metathorax, an interrupted longitudinal stripe on the 

 abdomen, and tarsi at the tips, black ; abdomen above minutely 

 and transversely rimulose (in the i almost punctulate) ; suturiform 

 articulation crenulate, bisinuated ; v^ings subhyaline, stigma 

 luteous ; terebra half as long as the abdomen, or a little longer. 

 ^ ? . Length, 1^ ; wings, 3^ lin. 



? . Antennae black, 34 — 38-joiuted ; radicle testaceous. Palpi 

 pale. Disk of mesotliorax, and scutellum, black. Metathorax 

 rugulose, not canaliculated. Scutum of the 1st abdominal segment 

 black, rugose, vpith a basal depression ; tubercles placed much 

 before the middle. Second segment vs^ith a triangular black rugose 

 spot, like the scutum of the 1st, of which it seems to be a continua- 

 tion ; segments 3 — 6 have each a larger, transverse, black patch, 

 leaving only the lateral margins, and the sutures narrowly, testa- 

 ceous. Terebra as long as the hind tibia, or half the abdomen. 

 Wings subhyaline, stigma luteous. 



3" similar ; antennae 40-jointed, much longer than the body ; the 

 1st joint testaceous. Disk of mesotliorax with the interstices 

 between the lobes testaceous ; scutelhim black only at the base. 

 Metathorax smooth, with two longitudinal cariuse uniting at the 

 apex. Spois upon segment 3 — 6 smaller than those of the J , paler, 

 and not contiguous. 



Var. ^. Less than 1 line long. Antennae broken. Genae and 

 face, abdominal segments 1 — 2, at the sides, the latter very broadly, 

 and the legs, testaceous ; the rest of the abdomen pitchy. Bred 

 by Fitch July 8th. 



Resembles B. tenuicornis, Wesm., Nouv. Mem. Ac. 

 Brux., 1838, p. 42, yet the differences of sculpture and 

 colour are too great to allow it to be referred to that 

 species. Neither can it be B. sciitcUaris, Wesm., lib. cit., 

 p. 14, for the antennae are much too long, and the tere- 

 bra too short. A specimen which I took in Corsica 

 differs in being a trifle smaller, with shorter (30-jointed) 

 antennae, and the terebra as long as the abdomen. 



I took both sexes together in a marsh near the sea, 

 Milford Haven. Several specimens have since been bred 

 by Fitch at Maldon, in June and July, from galls on the 

 couch-grass, Triticum rcpcns, but it is not yet known 

 upon what insect they are parasitic. Bred from similar 

 galls by Moncreafl" and thought by Walker to be Wes- 

 mael's tenuicornis (Entom. v. 240, 451). 



