314 BRITISH ICHNEUMONS. [3/esoc/iorus 



Table of Species. 



(2). I. Scutellum with an acute and elevated 



apical g^raniile .. .. 1. P(n.rrrs, Gi-av. 



(t). 2. Scutellum sini])le, with no apical 



granule. 

 (4). 3. Whole head, includins^ the mouth, 



black; abdomen short .. .2 xickipes, Rafz. 



(3). 4. Head often broadly pale, mouth al- 



waj's pale ; abdomen normal. 

 (6). 5. Petiolar area reaching- metathoracic 

 centre ; frontal orbits distinctly 



rufescent . . ■ ■ 3- tetricl's, Holnigr 



(5). 6. Petiolar area not reaching centre, or 



frontal orbits broadly white. 

 (8). 7. Frontal orbits broadly white ; anten- 

 nae slender, subhliform . . ■ • 4- lEiiPORALis, 77io/>is. 

 (7). 8. Frontal orbits not pure white ; anten- 

 nae subsetaceous. 



(12). 9. Body and legs unicolorous fulvou^ or 

 rufescent. 



(11). 10. Recurrent emitted before centre of 



areolet ; unguiculi normal .. S- FL'LC.L'RAXS, CiirL 



(10). II. Recurrent emitted from centre; un- 

 guiculi much stouter . . .6. PECTIXIPES, Bri'dg. 

 (g). 12. Body variegated with more or less 

 black and flavidous. 



(44). 13. Size large or normal ; terebra not 

 subulate ; petiolar spiracles cen- 

 tral ; basal nervure continuous ; 

 areolet not sessile. 



(17). 14. Face quadrate ; lower mandibular 

 tooth longer than the upper. 



(16). 15. Postpetiole not at all margined later- 

 ally ; petiole black .. ■ • /• VITTICOLLIS, Zr«//;;^r. 



(15). 16. Postpetiole submargined laterally ; 



petiole testaceous . . . . 8. testacel'S, Grav. 



(14). i;. Face transverse ; mandibular teeth 

 of equal length. 



(21). 18. Claws submutic and longer than the 

 pulvilli ; tarsi not infuscate. 



(20). 19. Basal segment acutely elevated ; 



thorax entirely black . . ■ ■ 9- se.aurufus, Hohjigr. 



(19). 20. Basal segment not elevated; thorax 



at least partly red .. .10. i:oy^Y\}<,v>, Holi)igr. 



(18). 21. Claws pilose, at least basally pectin- 

 ate, not longer than pulvilli. 



(39). 22. Hind tarsi pale, rarely dull ferrugin- 

 eous; thorax usually pale. 



(30). 2T^. Face of $ black, with the orbits alone 

 pale. 



(27). 24. Thorax entirely black ; abdomen cen- 

 trally rufescent. 



(26). 25. Hind coxae dark ; third segment 



basally pale .. .11. fi'scicorxis, j5/'-/ir/^. 



(25). 26. Hind coxae and whole of the third 



segment pale .12. CRASSICRUS, Thonis. 



(24). 27. Thorax red-marked ; abdomen not 

 rufescent. 



