BRITISH ICHNEUMONS. 



\Plectiscus 



not dull, with prothorax sometimes rufescent; mesonotum substriate, 

 with basal scutellar fovea very large and deeply impressed; metathorax 

 somewhat short, with basal area distinct and basal carina of petiolar area 

 strong. Scutellum black. Abdomen subfusiform, not elongate and often 

 mainly badious; apical margin of the second to fourth segments some- 

 what broadly testaceous; basal segment nearly parallel-sided, bicarinate, 

 with distinct tubercles; two basal segments dull and finely aciculate- 

 punctate, the third smoother; gastrocoeli glittering and not small. Legs 

 pale testaceous, with hind tibiae at both extremities and their tarsi 

 piceous; coxae usually pale. Wings with the stigma dull testaceous; 

 basal nervure continuous and second recurrent strongly curved ; discoidal 

 cell narrow. Length, 35-4^ mm. 



The enlarged apical antennal joint is remarkable. Strobl's female 

 (Mitt. Nat. Ver. Steierm. 1903, p. 118), with twenty-one antennal joints, 

 seems distinct. 



Forster knew a single female from about Aix-la-Chapelle in Prussia, 

 and Thomson found both sexes near Helsingborg in southern Sweden 

 I possess the two females upon the strength of which Bridgman 

 introduced the species as British (Trans. Ent. Soc. 1889, p. 432) and I 

 have drawn the above description from them; they were captured about 

 Shere in Surrey during 1887. 



PLECTISCUS, Gravenhorst. 

 Gr. I.E. ii. 978; Forst. Verb. pr. Rheinl. 1871, p. 84. 



Head not cubical, posteriorly constricted, with base of vertex acutely 

 transcarinate ; eyes not pilose ; face parallel-sided and the distinctly 

 discreted clypeus laterally somewhat compressed. Antennae seventeen 



