ART. 14 ICHNEUMON-FLEES OF GENUS POLYCYBTUS CUSHMAN 55 



24. Posterior orbits wliite alljoaniiulatus Szepligeti, male (Paraguay). 



Posterior orbits black, at most with a small white spot 25. 



25. Second recurrent interstitial surinamensis Szepligeti, female (Surinam). 



Second recurrent antefurcal buscki Cushman, female, male (Panama). 



26. Propodeum white marked, at least the apophyses white 27. 



Propodeum not white marked 32. 



27. Mesopleurum red at least below, usually black and white above 28. 



Mesopleurum black and yellow or white 31. 



28. Mesopleurum not at all black; propodeum coarsely rugose. 



bulbosus Cushman, female (Mexico). 

 Mesopleurum more or less black above 29. 



29. Propodeum black giacomellii Schrottky, female (Argentina). 



Propodeum red 30. 



30. Propodeum with a median black stripe. 



univittatus Cresson, female, male (Mexico) (See 37). 

 Propodeum not black-marked__rufipleuris Szepligeti, female, male (Brazil). 



31. Propodeum mostly red semirufus Szepligeti, female, male (Brazil). 



Propodeum black and white infractus Cushman, female (Panama). 



32. Propodeum black 33. 



Propodeum red 34. 



(albolineatus Cameron, female [British Guiana]. Will run no farther 

 in key on basis of original description.) 



33. Scutellum black, only the carinae white. 



emaculatus Szepligeti, female, male (Bolivia). 

 Scutellum and postscutellum white. 



alboannularis Ashmead, female (Lower California). 



34. Propodeum longitudinally impressed. 



excavatus Szepligeti, female, male (Bolivia), 

 sulcatilobus Cushman, female (Brazil). 

 (sulcatilGhus agrees with the very brief description of excavatus). 

 Propodeum in basal middle with a triangular impression, between the 



apophyses flat 35. 



Propodeum not impressed 37. 



35. Scutellar carinae black chiriquensis Cameron, female (Panama). 



Scutellar carinae white 36. 



36. Propodeal carina straight rufiventris Spinola, female, male (Guiana). 



Propodeal carina curved forward medially. 



saladonis Cushman, female, male (Argentina). 



37. Apophyses cariniform ; mesoscutum with a white spot above each tegula. 



univittatus Cresson, female, male (Mexico) (See 30). 

 Apophyses very long; mesoscutum without such white spots. 



tubulifera (Viereck), female (Peru). 



38. Thorax red 39. 



Thorax not entirely red 57. 



39. Hind tibia black 40. 



Hind tibia red or yellow 41. 



40. Head red nigrotibialis Szepligeti, female (Bolivia). 



Head black and white elegans (Viereck), male (Peru). 



41. Face white at least laterally 42. 



Face black 46. 



(sartor (Fabricius). Can be run no farther in key on basis of 

 original description or that of Spinola. Brull6 places it in his 

 second group of Mesostenus, saying that his specimen is not the 

 same species as that described by Spinola, since his lacked the 

 frontal horn. This would exclude it from Polycyrtus.) 



