Lawpronofa.] BRITISH ICHNEUMONS. 257 



Tomlin, The Mound in Southerland towards the end of August from Col. 

 Yerbur}', Selsley near Birmingham in the middle of INIay from Martineau, 

 the New Forest from Miss Chawner, Crookston in Scotland early in June 

 from Dalglish ; and on 20th August, 1907, Elliott swept several males 

 from herbage by the Tay, at Birnam, in Perth. Gravenhorst (i. Suppl.688) 

 records it from Netley, in Shropshire. 



3. accusator, Fah. 



Ichiieiiiiioit accusator, Fab. E.S. ii. 172, ? (iiec Jur.). Piiiipla accusator, Fab. 

 Piez. 117. Lissoiiota accusator, Gr. I. E. iii. 101 ; Tasch. Zeits. Ges. Nat. 1803, 

 p. 290, ? ; Cylloceria iiiarginator, Schiod. Gudr. Mag. Zool. 1839, Ins p. 24, cT ? . 

 Lampronota Diarginator, Holragr. Sv. Ak. Handl. 1800, n. 10, p. 47 ; Schrn. 

 Opusc. Ichn. 1334, d ? . (?) L. dciiticornis, Hal. Ann. Nat. Hist. 1839, p. 121, 



Head black with the mouth ferrugineous. Antennae slender and fili- 

 form, longer than half the body. Thorax gibbulous and immaculate ; 

 metathorax with four longitudinal costae. Scutellum black. Abdomen 

 as long as head and thorax and a little narrower than tlie latter ; basal 

 segment entirely scabrous and black, the following black and finely coria- 

 ceous throughout, with the margin broadly pale castancous ; terebra as 

 long as the abdomen, emitted from a ventral fold, black willi the spicula 

 fulvous. Legs normal and red with the coxae and trochanters black and 

 the latter dull ferrugineous beneath ; tarsal claws simple. Wings normal 

 and somewhat clouded ; stigma and radius piceous, radix paler and tegu- 

 lae black; areolet wanting. Length, 8 — 10 mm. 



The above description of Gravenhorst and Taschenberg leaves, I think, 

 no doubt that Lissoiwta accusator is synonvmous with Cylloceria marginator 

 and not with L. melaitcholica, as has been tentatively surmised by Schmiede- 

 knecht ; the four longitudinal costae of the metathorax are found only in 

 this genus throughout the Pimplinae, and the broad rufescent segmental 

 margins only in this species ; no mention is made of the darker hind 

 tibiae, but Holmgren tells us this is a variable character. 



From the two preceding species the present may be known by the 

 rather stouter flagellum, less parallel-sided abdomen with the segments 

 dull to their apices which are much more broadly red and closely sculp- 

 tured, the third distinctly broader than long and the three basal not 

 apically smoother ; basal segment shorter and broader, terebra exactly 

 (in my examples) as long as the abdomen, the coxae a littl<> longer and 

 the J carinae more distinct. 



This is a northern species, connnon in Sweden and Denmark; Graven- 

 horst records a single specimen from Gottingham and Toscjuinet says it 

 occurs in Belgium in June. With us it a{)pears rare ; there are specimens 

 in the out-of-date British Museum collection, labelled Lampronota accusator 

 by Desvignes ; and I possess a couple of females captured by Piffard at 



