BRITISH ICHNEUMONS. 



185 



Post-petiole black ; hypopygium of 



(^ not laterally sinuate. 

 Abdomen not centrally red. 



Gastrocaeli small ; cheeks black ... 2. palliatorius, Grav. 

 Gastrocaeli normal ; cheeks pale... 3. trifasciatus, G^njT/. 



Abdomen centrally red 4. LITIGIOSUS, Wesm. 



Post-petiole pale ; hypopygium of 



$ laterally sinuate. 

 Mandibles bidentate ; femora black 5. crispatorius, Linn. 

 Mandibles sub-unidentate ; femora 



fulvous 6. EQUITATORIUS, /"aw^r. 



Apical segments white-margined ; $ 



hypopygium acuminate apically. 

 Head posteriorly truncate ; hind 



femora fulvous 7. ATRATORIUS, Fab. 



Head posteriorly not truncate ; hind 



femora black 8. QUADRIPUNCTORIUS, il///7/. 



Apophyses tuberculiform, sub-ob- 

 tuse ; ventral segments two and 



three at most plicate. 

 Basal half of flagellum pale, at least 



beneath. 

 Areolet sub-deltoid ; fourth ventral 



segment of c? plicate 9. MONITORIUS, Prt/zs-. 



Areolet pentagonal ; fourth ventral 



segment not plicate. 

 Hind femora pale ; hypopygium of 



$ acuminate, of 5 not concealing 



terebra. 



Second segment immaculate 10. GLAUCATORIUS, Fab. 



Second segment pale-marked. 

 Flagellum basally entirely fiavous, 



of? not banded II. PALLIDICORNIS, 6^ra?/. 



Flagellum basally black above, of 



$ white-banded 12. vadatorius, Illig. 



Hind femora black ; hypopygium 



of (J shortly acuminate, of $ con- 

 cealing terebra 13. amatorius, Mull. 



Basal half of flagellum not entirely 



pale, rarely rufescent beneath. 

 Frontal orbits and all the tarsi clear 



red 14. CERINTHIUS, Grav. 



Frontal orbits and the tarsi not 



entirely red. 

 Areola transverse ; central segments 



mainly red 15. NEGATORIUS, ^«(5. 



Areola quadrate ; central segments 



not red. 

 Abdomen oval or elliptic ; legs not 



red 16. INDOCILIS, Wcsin. 



Abdomen sub-linear; legs clear red 17. subskricans, 6^/v«7/. 



Apophyses stout and often large ; 

 mandibles sometimes unidentate 

 (Amijlyteles, auctt.). 



Mandibles bidentate ; hypopygium 

 of ^ not acuminate. 



Scutellum pale ; abdomen finely 

 punctate, not entirely red api- 

 cally. 



