186 INSECUTOR INSCITI.^ MENSTRUUS 



19. Wing scales normal, narrow A'edcs poicilia Theobald 



Wing scales very broad A'edeomyia catasticta Knab 



20. Mesonotum uniformly brown 21 



Mesonotum with silvery marks 23 



21. Tarsi brown 22 



Tarsi white-marked A'edes vexans Meigen 



22. Palpi of female very short Armigeres obturbans Walker 



Palpi one-third as long as proboscis. .Leicesteria digitata Edwards 



23. Mesonotum silvery on anterior two-thirds A'edes nivea Ludlow 



Mesonotum with broad straight silvery band on each side, 



A'edes gardnerii Ludlow 

 Mesonotum with narrow curved silvery band on each side, 



A'edes aegypti Linnaeus 

 Mesonotum with straight narrow median silvery line, 



A'edes albopicta Skuse 



24. Proboscis straight, normal ; small species, 



Uranotaenia pygmaea Theobald 

 Proboscis hooked ; very large species 25 



25. Caudal tuft black, white and orange ; legs with white marks, 



Toxorhynchites rcgius Tenant 

 No caudal tuft; legs without white, 



Toxorhynchites metallicus Leicester 



26. Tip of hind tarsi white Anopheles fuliginosus Giles 



Tip of hind tarsi not white 27 



27. Palpi black, or tip whitish shaded, 



Anopheles barbirostris van der Wulp 

 Palpi with last two joints white, with narrow basal black rings. 28 



28. Proboscis yellowish with a dark band, 



Anopheles tessellatiim Theobald 

 Proboscis brown 29 



29. Yellow marks on costa smaller; third dark spot with two spots 



below on long vein Anopheles ludlozv'ii Theobald 



Yellow marks on costa larger; third dark spot with one spot 

 below, more or less joined to it Anopheles indcfinita Ludlow^ 



' Probably only a variety of hidloivii Theo. 



