36 



Rev. T. A. Marshall's Monograph of 



(45) 46. 



(48) 47. 



(47) 48. 



(50) 49. 



(49) 50. 

 (52) 51. 



(51) 52. 



(63) 64. 



(66) 65. 



(65) 66. 



(68) 67, 



(67) 68, 



Antennae with 14 joints, or fewer than 

 14 



Base and apex of the abdomen tes- 

 taceous 



Only the ba.se of the abdomen testaceous 



Hind coxae black 



Hind coxce yellow 



Prothorax rufotestaceous ; legs testa- 

 ceous, hind femora rufescent 



Prothorax black or ferruginous ; legs 

 rufotestaceous with the outer side of 

 the femora middle of tibiaj, and tips 

 of tarsi infuscated 



Antenna} with 14 joints 



Antennae with 13 joints, or fewer than 



13 



Abdomen yellow at both ends; pale 



brown in the middle 



Abdomen blackish or infuscated at the 

 apex 



First abdominal segment yellow or fer- 

 ruginous 



First abdominal segment blackish, or 

 partly pale 



Cubital uervure visible as far as the end 

 of the 1st cubital areolet 



Cubital nervure colourless, hardly 

 visible beneath the 1st 



Antenna} with 13 joints 



Antennae with 12 joints 



Under side of 1st cubital areolet dis- 

 tinct ; 1st abdominal segment brown 

 or blackish 



Under side of 1st cubital areolet indis- 

 tinct ; 1st segment yellow 



Anteunaj 15-joiuted 



Antennae with 14 joints, or fewer than 



14 



Wings hyaline ; stigma very pale, colour- 

 less ; abdomen pale yellow, infuscated 

 in the middle 



Wings whitish ; stigma yellow ; abdomen 

 blackish, including the 1st segment ... 



Antenna} with 14 joints 



Antenme \\\i\\ fewer, i.e. with 13 or 

 12 joints 



Antennae with 13 joints 



Antennae with 12 joints, the apical 

 formed of two joints soldered together 



Abdomen subsessile, 1st segment short, 

 cyathiform 



Abdomen subpetiolate, 1st segment 



long, linear, or sublinear 



. Abdomen brown, 1st segment testa- 

 ceous ; length 5 line 



, Abdomen black with the two 1st sutures 

 pale ; length 1 line 



53 



49 

 51 



22. asteris, Hal. 



23. rihis, Hal. 



24. cirsii, Hal. 



25. eylanterise, Hal. 



55 



61 



26. hortensis. Marsh. 



57 

 59 



27. cliri/scmthemj, Marsh. 



28. mutricarix, Hal. 



29. arundinis, Hal. 



63 



30. cardui. Marsh. 



31. salicis, Hal. 



32. exigmis, Hal. 



67 



69 



33. scahiosm, Marsh. 



2. Whiles whose Females are unhiown. 



(2) 1. Cubital nervure distinct as far as the 



end of the Ist cubital areolet 



(Ij 2. Cubital nervure incomplete or none ... 



