286 BRITISH ICHNEUMONS. 



sub-filiform, nigrescent, of ? slender ; first flagellar joint longer than 

 second. Thorax not coarctate ; mesonotum shining, with distinct notauli ; 

 metathorax finely scabrous, areae not well determinate ; areola transverse ; 

 dentiparal areae elongate. Abdomen convex, ovate-fusiform, black, dull 

 and very finely scabrous ; second segment not longer than broad, apically 

 red ; third transverse ; terebra short. Legs slender, black, with the knees, 

 trochanters and tibiae partly dull red, front ones paler in ^ ; hind tarsi 

 slender. Wings pure hyaline ; nervellus sub-opposite, intercepted far below 

 the middle. Length, 4 mm. 



This species is very like Diadromus siibtilicornis in size and confor- 

 mation, but differs in colour as well as in the metathoracic structure and 

 glabrous frons. 



Thomson simply says of it, " Funnen i bada konen vid Palsjo niira 

 Helsingborg ; en hanne har Bridgman siindt till paseende fran England." 

 The latter took a single male at Earlhham, near Norwich, in July. 



HEMICHNEUMON, Wesmael. 



Wesm. Bui. Ac. Brux. 1857, p. 410. 



Head short, transverse, from in front sub-rotund ; clypeus convex, 

 apically mutic, basally discreted ; cheeks buccate ; vertex hardly narrow ; 

 frons nitidulous, sparsely punctate ; mandibular teeth weak, of equal 

 length. Antennae slender. Thorax not coarctate ; notauli elongate ; 

 metathorax gradually declived from base to the slightly produced apex ; 

 areola elongate, apically incomplete. Abdomen sub-cylindrical, elongate, 

 sub-convex ; thyridii distinct ; terebra retracted. Legs not stout ; coxae 

 elongate, the intermediate sub-ovate, the hind ones of ? compresso-sub- 

 dentate apically. Areolet incomplete externally, rarely entire in $ ; 

 nervulus opposite ; nervellus a little antefurcal, intercepted far below the 

 middle. 



I. elongatus, Ratz. 



Hemiteles elongattis, Ratz. Ichn. d. Forst. iii. 154, ?. Hemichnenmon elongatus, 

 Holmgr. Ichn. Suec. iii. 358; Thorns. O. E. xv. 161 1; Berth. Ann. Soc. Fr. 1896, 

 p. 392, (J ? . H. subdolus, Wesm. Bui. Ac. Brux. 1857, p. 411 ; Brisch. Schr. Nat. 

 Ges. Danz. 1878, n. 6, p. 59, <? 9 • 



Head black ; face somewhat protuberant, transversely sculptured ; 

 clypeus smooth ; palpi pale; mandibles and clypeus of $ generally white 

 or red. Antennae red, scape sometimes black ; flagellum filiform, apically 

 infuscate and slightly attenuate. Thorax black ; epomiae wanting ; sternal 

 sulci deeply impressed ; petiolar area concave, apically slightly emarginate. 

 Abdomen black, with central segments more or less distinctly red ; post- 

 petiole narrow, centrally aciculate ; second segment elongate, finely cori- 

 aceous, with gastrocaeli small, the thyridii transverse and somewhat 

 remote from the base ; third sub-quadrate ; terebra very short, somewhat 

 stout. Legs red ; coxae, trochanters, tarsi and, in c^, apices of hind tibiae 

 with more or less of all the femora, black. Stigma infuscate ; radix white, 

 tegulae usually black. Length, 5-7 mm. 



Probably not uncommon in Britain, whence it has not been hitherto 

 recorded. I was so fortunate as to breed a female from the cocoon of a 



