PUPAL STAGES OF AVEST AFBICAN CrLICID^E. 19 



S. Tlie small plumes on the seventh (anal) segment are of branched hairs . . 4. 

 The small plumes on the seventh segment are of simple or subplumose 



hairs Culex nigrocostalis, Theo., p. 40. 



Culex lividocostalis, Graham, p. 4o. 

 The small plumes on the seventh segment are of plumose hairs. 



Culex pidlatus, Graham, p. 46. 



4. The anal plates have a dark cloud or stigma in the centre, the trumpets 



have a lighter ring or band in the middle . . Culex quasigelidus, Theo., p. 39. 



AVithout such a stigma Culex guiarti, Blanch., p. 38. 



•o. The trumpets though short, are stout or very much developed laterally, 

 with very wide mouths, the openings of which end in a sharp angle 



on the inner side. (Anophelin.ts) Fgretophorus costcdis, Lw., p. 22. 



Cellia pharoensis, Theo., p. 23. 

 MgzorhgncJmsmauritianus,Theo.,]).24:. 

 Trumpets with ordinary normal openings 6. 



43. With short trumpets, not longer than the Axophelin.e 7. 



With longer trumpets 11. 



7. Anal plates of unusual shapes 8. 



Anal plates normal as in Cellia 9. 



5. With two long hairs in front of the thorax , , Culiciomyia cinerea, Theo., p. 34, 

 Without such hairs Uranotcenia balfouri, Theo., p. 50. 



Myxosquamus paludosus, Graham, 

 9. With tree-liiie plumes of branched hairs at the base of the thorax and [p. 49. 



with the anal plates sometimes with ciliated edges. 



Stegomyia fasciata, F., p. 25. 



,, apicoargentea, Th.Qo.,^ 29, 

 „ afi'icana, Theo., p. 28. 

 Thorax without such plumes, but with a distinct thick pubescence in 



the same place , , , 10. 



10. With two long hairs in front of the thorax . . Culicio))igiafreetv2vnensis,Theo,,'p.?}S. 

 Without such hairs ; all pubescence abnormally short. [p, 32, 



ylildimorplmi punctothoracis, Theo,. 



11 , With rather wide-mouthed trumpets 12, 



With narrow-mouthed trumpets 13. 



12, With long plumose hairs on the abdomen , , Culex dissimilis, Theo,, p. 41. 

 Without such hairs Culex tigripes, v&^v.fusca, Theo,, p. 30. 



13. With the plumes on the seventh segment of branched hairs 14. 



Plumes absent on the seventh segment j only a single hair present. 



.^^dimorphus domesticus, Theo., p. 31. 

 Plumes on the seventh segment of simple or subplumose hairs, 



Culex nigrocostalis, Theo,, p. 40. 

 Culex lividocostalis, Graham, p. 45. 



14. Anal plates with a dark stigma in the centre ; the trumpets have a 



lighter ring or band in the middle , Culex quasigelidus, Theo,, p. 39, 



Anal plates without such stigma 15. 



15, With stellate hairs on the edges of the abdominal segments. 



Culex guiarti, Blanch., p, 38. 

 (PI. Vll, fig, 3,) 



Without such stellate hairs Culex alhovirgatus, Graham, ]). 43. 



„ caligmosus, Graham, p. 45. 

 „ duttoni, Theo., p. 35. 



c2 



