336 BRITISH ICHNEUMONS. [S/ich>pisthus 



(4). 3. Red-marked ; head broader than 



thorax ; pleurae punctate . . 2. LATICEPS, Thorns. 



(3). 4. Not red-marked; head normal; pleu- 

 rae smooth. 



(6). 5. Mesonotum deplanate ; 9 f^*-'^' apic- 



ally infuscate . . . . ■ • 3- FOKMOSUS, Bridg. 



(5). 6. Mesonotum distinctly convex ; 9 fe^'e 



centrally infuscate . . . . 4. coNVEXicoT.r.is, Thonis. 



1, complanatus, Hal. 



Mcsochonis coiDphiiiatiis, Hal. Ann. Nat. Hist. 1839, p. 114; Holmgr. Sv. Ak. 

 Handl. 1858, p. 131 ; Brisch. Schr. Nat. Ges. Danz. 1880, p. 182, s ? ; lib. cif. 

 1892, p. 46, <? . M. aciculatus, Bridg. Trans. Ent. Soc. 1881, p. 162, pi. viii, 

 fig. 11, ?; Stictopisthus aciculatus. Thorns. Ann. Soc. Ent. Fr. 1885, p. 344, 

 i ? . (?) M. tipularius, Ratz. Ichn. d. Forst. iii. 120, ? {itcc Grav.). 



A testaceous- and black-marked species with the iiiescjthorax elongate. 

 Mead not very strongly buccate, testaceous with the ocellar region and 

 mandibular aj)ices nigrescent ; temples broad and punctate ; eves rather 

 small and face convex. Antennae hardly longer than body, of j' piceous 

 and basally paler beneath. Thorax finely and minutely punctate, disc- 

 ally deplanate ; of 9 infuscate piceous and sometimes rufescent below 

 radices, of J discally black and ventrally stramineous ; mesonotum and 

 mesosternum longer than broad, with pleurae strongly and sparsely punc- 

 tate, centrally smooth ; upper metatlioracic areae complete and subdis- 

 tinct. Abdomen slightly shorter than head and thorax, glabrous and 

 nitidulous ; black with apex of second, in 9 base and in ($ whole of 

 third segments testaceous ; the following piceous and anus pale, as in J 

 is part of fourth segment ; basal segment stout and hardly as long as 

 hind trochanters, with petiole distinctly shorter than the apically rugose- 

 aciculate and subapically impressed postpetiole, and the following seg- 

 ments all transverse ; terebra short. Legs not very stout ; of 9 fulvous 

 with tarsi paler, hind coxae partly and apices of their tibiae infuscate; of 

 (J flavidous with tarsal joints apically infuscate ; base of claws indistinctly 

 pectinate. Wings hyaline with stigma dull piceous and tegulae whitish ; 

 radius a little curved apically ; basal nervure not continuous. Length, 



Easily distinguished by its elongate bod}', discally deplanate mesono- 

 tum, the sparsely and somewhat strongly punctate pleurae and by the 

 mesosternum being longer than broad. Thomson terms the species 5. 

 acicula/iis of Haliday, doubtless a lapsus calami for Bridgman ; Schmicde- 

 knecht synon}inises the two latter authors' names without comment. 



North and central Europe ; France and rare in Sweden. It has not 

 been bred on the Continent, but Bridgman's type was described from a 

 female bred in Devon on 17th September from Pun's brassldle through 

 Apankles glomcratus by Bignell, who subsequently raised other specimens 

 on 8th July from Ptcrophorus teucrii through Linunria nificincta ; Buckler 

 adds Pun's rapac and Abraxas grossulan'ala as hosts. 1 have twice cap- 

 tured it in Suffolk, in the Bentley Woods towards the end of May and by 

 sweeping after dark at Herringswell Fen in August. 



