220 BRITISH ICHNEUMONS. [Holoc 



hind tarsal joints wliitc. Wings witli tcgulae stramineous and stigma 

 piceous. Length, 7 mm. 



Known by its coarctalc body, stout femora with tlie hind ones apically 

 and their tibiae botli apieally and before the base infuseate, the strongly 

 ine(]ual ealearia, blaek and at the base diseally white hind tarsi, and the 

 subtransverse postpetiole and seeond segment. 



It seems very rare on the Continent; Holmgren found it from the 

 middle of July to early August in Sweden and southern Lapland ; and 

 Brischke bred it in Prussia from larvae of Tcnthrairo sp., though it is not 

 certain that his species is the same. Bridgman took this insect (Trans. 

 Norf. Soc. 1894, p. 620) at Norwich and Erundall in June and July; and 

 Bignell captured it at Exeter on 17th August. 1 have a couple of females 

 from Surrey. 



4. argentata, Grav. 



CciDipoplcx (irgciitatiis, Gr. I.E. iii. 543, ¥ ; Holmgr. Sv. Ak. Handl. 1854, 

 p. 20, cf ? (ncc Ratz ). Liiimeria argentata, Holmgr. lib. cit. 1858, p. 81; 

 Brisch. Schr. Nat. Ges. Danz. 1880, p. 165 t'M892. p. 45; Bridg. -Fitch, Entom. 

 1885, p. 205, (7 ? . Holocrciiiiia argentata, Thorns. O.E. xi. 1181, S ? . 



Black with the abdomen towards its apex and the legs pale ochraceous. 

 Head a little narrowed behind the eyes ; mandibles pale, not stout and 

 longer than basally broad, with acute teeth and their base not reflexed 

 below. Palpi, underside of scape and callosity before radices stramin- 

 eous ; mesopleurae alutaceous, hardly punctate and somewhat dull, with 

 speculum little nitidulous ; costulae obsolete or wanting. Abdomen black 

 with apical margin of second segment, the third except diseally at its 

 base and at least sides of the following, rufescent ; postpetiole subtrans- 

 verse or in (J quadrate ; ventral plica flavous. Legs pale fulvous, with 

 hind coxae and basal joint of their trochanters black ; hind tibiae hardly 

 or rarely infuseate at apex and before the white base ; hind tarsi pale, 

 with joints apically nigrescent ; anterior coxae stramineous ; inner inter- 

 mediate calcar hardly double length of the outer. Tegulae stramineous 

 and stigma piceous. Length, 6 mm. 



Known by the pale ventral plica and humeral callosities, the subim- 

 maculate hind tibiae and posteriorly distinctly constricted head. 



Not uncommon throughout Sweden, Germany, France and probably 

 Belgium. It does not appear to have yet been bred with any certainty; 

 the six species of Lophyrus referred to as hosts by Dalla Torre certainly 

 apply to Ratzeburg's species (^ H. cothurnata, Holmgr.), not yet known 

 as British ; and of Rondani's record from Cladiiis tincinahis and Croesus 

 septcntrionalis I know nothing. Giraud in 1877 professed to know it from 

 such different hosts as Cimhex 7'ariabilis and Halias chlorana; to which 

 Gaulle adds Plcroims ribesii. Bridgman found the present species at 

 Earlham in August, and Bignell captured it at Pounds near Plymouth on 

 31st July; 1 have a full series from Surrey in Capron's collection and 

 other examples from (juildford from Butler and Tostock from Tuck ; and 

 I have once or twice swept it myself after dark in Herringswell Fen in 

 Suffolk. 



