(26 



(3 



(2 



(5 



(4 



(17 



(12 



(II 



(lO 



(9 



(7 

 (14 



(13 

 (i6 



(15 

 (6 



(21 



(20 



(19 



(18 



(23 

 (22 



(25 



(24 



(I 



(34) 



(31) 

 (30) 

 (29) 



(28) 

 {33) 

 (32) 

 (27) 



BRITISH ICHNEUMONS. 221 



Tal>le of Species. 



1. Notauli obsolete ; spiracles elongate or oval. 



2. Abdomen metallic blue-black i. NIGROCYANEUS, 6^ra2A. 



3. Abdomen not blue-black. 



4. Head and tborax mainly red 2. RUFUS, fFtW«. 



5. Head and thorax not red. 



6. No abdominal segment entirely red. 



7. Cheeks not buccate ; apophyses usually 



wanting. 



8. Mesopleurae and all the orbits not 



white-marked. 



9. vSecond segment basally sub-rugose ; 



antennae filiform 3. PEDATORIUS, iv?^. 



10. Second segment basally sub-glabrous ; 



antennae centrally stout 4- PUMILIO, //"(j/w^r. 



11. JNIesopleurae and all the orbits white- 



marked 5. PHALER.ATUS, Hal. 



12. Cheeks sub-buccate; apophyses distinct 



13. Apophyses large and stout ; apical 



segment entirely white 6. variegatus, Wcsm. 



14. Apophyses small ; apical segment at 



most white apically. 



15. Costulae and coxal areae entire; legs 



mainly red 7- DOLOROSUS, Cwz/. 



16. Costulae and coxal areae obsolete ; 



legs mainly black 8. TENUICORNIS, Grav. 



17. Central segments entirely red. 



18. Gastrocaeli obsolete ; scrobes large ; 



frons sub-glabrous. 



19. Post-petiole glabrous ; petiolar area 



tri-divided 9. ALBINUS, Grav. 



20. Post-petiole scabrous ; petiolar area 



entire 10. SEMIRUFUS, Dcsv. 



21. Gastrocaeli distinct ; scrobes small ; 



frons punctate. 



22. Spiracles elliptic; anus white-marked 11. ORBITALIS, 6^r(^^'. 



23. Spiracles broad oval ; anus black. 



24. Lateral scutellar carinae entire ; face 



broadly white 12. TRICINGUL.VTUS, Grav. 



25. Lateral scutellar carinae wanting; face 



narrowly white 13. DECIPIENS, Wesin. 



26. Notauli distinct ; spiracles nearly cir- 



cular. 



27. Metathorax black ; scutellar carinae 



not entire. 



28. Scutellum black. 



29. Apophyses obsolete ; anus immaculate 14. RUBELLUS, Grav. 



30. Apophyses distinct ; anus white- 



marked 15. NIGRICOLLIS, Wesni. 



31. Scutellum white. 



32. Antennae centrally white-marked 16. VOLUBILIS, 6^nJt/. 



33. Antennae of (^ centrally immaculate... 17. PACTOR, /Fc.?///. 



34. Metathorax usually red ; scutellar 



carinae entire 18. dimidiatus, Grav. 



I. nigrocyaneus, Grav. 



Ichneumon nigrocyaneus, Gr. I. E. i. 117; Ste. 111. M. vii. 129, 9. ^ rUilyhibus 

 nigrocyaneus, Wesm. Mem. couron. Ac. Belg. 1S59, p. 12, i ; Thorns. O. E. xix. 2105 ; 



