42 



BRITISH ICHNEUMONS. 



\_TJirrsiliiclii/s 



(6). 5. Basal or lateral arcae, usually whok- 

 metanotum, smooth and shining 

 (ISCHNOHATIS, Fsf.) 

 (5). 6. Metanotum with no smooth areae, 

 al\va3's roughly sculptured. 



(12). 7, Antennae short, I'arely with more 

 than twenty joints; recurrent ner- 

 vure usually continuous or emitted 

 before areolar nervure. 



(11). 8. Antennae of $ with twelve or four- 

 teen joints, of (^ with as many as 

 sixteen; basal five flagellar joints 

 strongly elongate ; basal area 

 quadrate or wanting ; abdomen 

 sometimes centrally dull red ; 

 small spp. (Phradis, Fst) 



(10). 9. Basal metanotal area quadrate ; 

 flagellum of 9 12-jointed; coxae 

 and scape black 

 (9). 10. Basal metanotal area wanting ; 

 flagellum of 9 14-jointed ; legs 

 and scape fulvous 

 (8). II. Antennae with basal joints not 

 strongl)' elongate ; stigma broad ; 

 parallel nervure emitted below 

 centre of brachial cell ; basal 

 abscissa of hind wing radius 

 much longer than cubital trans- 

 verse nervure (IsuRGUS, Fst.) . . 

 (7). 12. Antennae more or less elongate, 

 always with more than twenty 

 joints; recurrent nervure emitted 

 beyond areolar nervure ; basal 

 metanotal area entire, its spira- 

 cles close to its lateral carinae 

 (Thersilochus, s.s.) 



(14). 13. Flagellum stout, 20 — 22-jointed ; 

 legs elongate, hind ones stout ; 

 vertex broad and cheeks long ; 

 metathorax rugose ; abdomen 

 centrally red, about double length 

 of terebra 



(13). 14. Not so. 



(26). 15. Head almost broader than thorax, 

 narrowed behind ; basal flagellar 

 joint distinctly longer than second; 

 abdomen usually pale-marked. 



(19). 16. Legs entirely flavous or testaceous; 

 antennae entirely or basally pale. 



(18). 17. Antennae and abdomen except first 

 segment testaceous ; terebra near- 

 ly as long as abdomen 



(17). 18. Antennae basall}' flavous ; second 

 segment and sides of following 

 red ; terebra a little shorter 



(16). 19. Legs with at least the hind coxae 

 black. 



(25). 20. Abdomen in part distinctly pale- 

 marked. 



3. NKiRiiLiLUS, Grav. 



4. MINUTUS, Bridg. 



5. NITIDUS, Bridg. 



6. MORIONELLUS, Hu/fHi'r. 



7. TRIANGULARIS, Gr. 



8. RUi'iVENTRis, Briscli. 



9. TRUNCORUM, Holmgr . 



