Megaslyhis] 



BRITISH ICHNEUMONS. 



19 



Forst., but it is larger, with basally strong petiolar area, somewhat niti- 

 (hUous metanotum and basally black metathorax. 



The above description is drawn from a male, beaten from an oak-tree 

 at Palmer's Heath, near Brandon in Suflblk, on 20th May, 1911, and an 



ajiparcntly co-specific female from Surrey in Ca])ron's collection. Kls(^- 

 where it has only been recorded from Aix in Prussia and Pl\ ni Bridge in 

 Devon, where it was taken on 27th May by Bignell. 



DICOLUS, Forstcr. 

 Forst. Verb. pr. Rheinl. 1S68, p. 171 (?) ; Forst. lib. cit. 1871, p. 9fi. 



Head small and posteriorly constricted with vertex sejiarated from 

 occiput by an acute costa, and not impressed ; eyes large, cheeks short, 

 with no sulci; face deplanate and slightly constricted apicallv with two 

 deeply impressed central longitudinal sulci ; clypeus distinctly disi-reted, 

 strongly convex, laterally compressed with lateral foveae deep; mandibles 

 not apically bidentate. Antennae as in the last genus, of 9 3' to 3+- 

 jointed; scape incras.sate and apically oblique; flagellar joints cylindrical 

 and elongate with the first much longer than second, in 9 \vith long verti- 

 cillate pilosity, in ^ with shortly erect hairs and the central joints not 

 emarginate. Thorax elongate, with wanting or subindicated notauji ; 

 metathorax deeply constricted a little before its centre and thus bisected; 



