l82 



BRITISH ICHNEUMONS. 



\^Fezomachus. 



(107). 108. 



Antennae and abdomen normal ... 40. tristis, Forst. 



Petiolar area normal and oblique... 41. CARNIKEX, Fbrst. 



Thorax elon^^ate 42. NiGRlCORNis, Forst. 



Abdomen not closely punctate and 

 pubescent throughout. 



Abdomen basally closely, apically 

 diffusely, punctate 43. CORRUPTOR, Forst. 



Abdomen diffusely punctate and 

 pubescent throughout. 



Head not broader than thorax 44. GRACILIS, Forst. 



Head broader than thorax. 



Thorax very short and head very 

 broad 45. BREVis, Bridg. 



Thorax and head normal. 



Abdomen strongly alutaceous, punc- 

 tures very distinct. 



Basal segment with tubercles cen- 

 tral and very prominent 46. Steveni, Grav. 



Basal segment with tubercles be- 

 yond centre and sub-obsolete. 



Antennae and thorax elongate 47. instabilis, Forst. 



Antennae and thorax short 48. FoRSTERl, Bridg. 



Abdomen not strongly alutaceous 

 nor distinctly punctate. 



Mesonotum triangular ; petiolar 

 area basally contracted 49. CURSITANS, Grav. 



Mesonotum normal ; petiolar area 

 not contracted. 



Petiolar area vertical ; meta- and 

 meso-notum equally long 50. DETRITUS, Forst. 



Petiolar area oblique ; meta- shorter 

 than meso-notum 51. pedicularius, Fab. 



Fifth flagellar joint twice longer 

 than broad. 



Abdomen closely punctate and pu- 

 bescent 52. COMES, Forst. 



Abdomen diffusely punctate and 

 pubescent. 



Meta- and meso-notum of equal 

 length ; third segment fasciated 53. fasciatus, Falh 



Meta- longer than meso-notum. 



Petiolar tubercles prominent ; ster- 

 num red 54. palpator, Grav. 



Petiolar tubercles obsolete ; ster- 

 num black 55. GEOCllh.K^S, Forst. 



^ A Guide to the Males. 



Apterous. 



Abdomen broadly pale centrally. 



Abdomen closely punctate. 



Coxae infuscate. 



Basal segment broad and explanate 34. FUSCULUS, Forst. 



Basal segment sub-linear and 



narrow 39. lustrator, Forst. 



Coxae red. 



Hind femora apically black 40. violentus, /^^>J'/. 



Legs entirely red. 



Mesonotum red. 



Metanotum piceous 36. frocursorius, Forst 



Metanotum red 43. dysalotus, Forst. 



