Phygadeuonin:.] BRITISH ICHNEUMONS. 



(26). 27. ScLitellar fovea entire ; tibiae not or 



hardly spinose. 

 (29). 28. Facial pubescence normal ; Ijody not 



elonjfate I'UVCADKUON, Grav. 



(28). 29. Facial pubescence dense and lonj^ ; 



body stronyly elongate I'ANARC.VROPS, Fiirsi. 



(i). 30. Basal abdominal segment broader at 



base than at apex Okksbius, Marsh. 



Discoidal cell obtuse. Discoidal cell acute. 



HELCOSTIZUS, Fdrster. 

 Forst. Verb. pr. Rheind. 1868, p. 186; Cyrtocryptus, Marsh. Tr. Ent. Soc. 1872, p. 259. 



Head not narrowed behind the eyes ; vertex centrally immarginate, 

 cheeks sub-buccate ; clypeus short and, in $ , apically sub-membranaceous ; 

 labrum free and sub-triangular; mandibles not stout, apically contracted, 

 with the lower tooth small. Antennae not elongate, sub-filiform ; scape 

 excised to nearly below its centre. Notauli distinct and somewhat short; 

 mesosternal sulci not reaching centre; epicnemia nearly entire; meta- 

 thorax shoit, with but one transverse costa, before which the basal area is 

 not transverse ; spiracles small and circular. Abdomen of 9 sub-clavate, 

 of (J nearly linear, finely alutaceous throughout ; basal segment only 

 slightly curved, convex, with spiracles a little behind its centre ^ and no 

 dorsal carinae. Tibiae sub-mutic ; front ones of ? inflated and l)asally 

 constricted. Wings with stigma somewhat narrow, areolet small and 

 sub-convergent, all the nervures distinct to the outer margin ; nervellus 

 intercepted below its centre. 



This genus contains but a single British species and is placed by 

 Ashmead among the Xoridini on account of the sub-sessile abdomen, 

 although its present position is that assigned to it by all other authors. 

 Schmiedeknecht retains Taschenberg's name for it, which antedates 

 Forster's by three year.s, and makes no mention of Marshall's, under which 

 it has hitherto been known in Britain. Only one other species, Ifelero- 

 crypiits macu/dfus, Woldst., is included in this genus on the Continent. 

 Among the Cryptinae it is as incongruous as is A/omvia among the Ich- 

 neumoninae, l)ut no more natural ]iosition at jiresent appears open to it. 

 (Confer, however. Prof R. Krieger in Zeits. Syst. Hym.-l)i[). 1903, p. 292.) 



I. brachycentrus, Grav. 



Cryf'tiia hrarhyreiilriiSy Gr. I. E. ii. 457 ; .Ste. III. Man. vii. 27S, i 9 . Cyrtocrypltia 

 bnuhyn'iitni^y V'oll. I'inac. pi. xli. fij;;. 5. Mesoityplim Inachyinitnis, Tlioms. O. K. vi. 

 592. JirachytcnUiis biai/iyieiilrns,'^chm. 0\M<.c. Ichn. viii. 590. /i. /'//n/>/tirii/s,'Vasc\\. 

 Zeits. Ges. Nat. 1865, p. 106, 6 9. 



Head hardly narrower than thorax ; vertex broad and not declived 

 behind the ocelli ; frons not prominent, dull, i)iibescent and finely punc- 



• Gravenhorst distinctly says " tuberculis lateralibus jtaiilu ante medium sitis"; he considered 

 the petiole to be the apex and the post-petiole (" pars aiitica ") the base of the first scKmont. 



