General Index. 



Orthorrhapha group, 4. 

 Ovum, 6. 

 Owl midges, 4. 



P 



Palmate hairs of larva, 9, 35 . 



Palpi, length of as basis of, classification, 5 ; of adult insect, 14 ; in identification, 



28, 30, 31 ; scale structure, 17. 



Panoplites, genus, 18 ; eggs of, 7 ; wing scales of, 17, 18 ; palpi of, 14. 

 Phantom larvae, 12. 

 Posterior cross-vein, 15. 

 Posterior hair of larva, 10, 36 . 

 Preservation of mosquitoes, 27. 

 Prevalence of " anopheles," 41, 44. 

 Pro-thoracic lobes, 18, 122. 

 Proboscis, 4 ; scale structure, 17. 

 Psorophora, genus, eggs of, 7. 

 Psyckodidos, 4 ; characters of, 5. 

 Pupa, 4, 12 ; distinctions between "eulex" and " anopheles,"13 ; breathing horns of, 



as a means of distinguishing species, 68. 

 Pupa-case, mode of opening of, 4. 

 Pyretopkorus, genus, 18, 19, 66. 



Respiratory tubes of larvse, 8, 12. 

 Rim of " anopheles " eggs, 8, 39. 



s 



Sabethes, leg scales of, 17. 



Sandflies, 4. 



Scales, different forms of, 16 ; on wing veins, 4 ; as a basis of classification, 17, 18, 19 



20,21,63,97,100,103,112, 114. 

 Scutellum, 14, 29. 

 Seasonal prevalence, 43. 

 " Shaving brushes," 35. 

 Simulidce, 4, 5. 



Siphon tube of larvse^S ; of Stegomyia, Culex and Tceniorhynchus larvae, 9. 

 Siphonic index, 9. 



Species, definition of, 59 ; differentiation of, 62. 

 Speckling of palpi and legs, 29, 30, 33. 

 Spiracles, 13. 

 Splitting of pupa-case, 4. 



Stegomyia, eggs of, 7 ; larva of, 9 ; characters of palpi, 14 ; scale structure of, 17. 

 Stethomyia, genus, 18, 122. 



Streams and canals as factors in spread of " anopheles," 47. 

 Subcostal vein, 15. 

 Supernumerary cross-vein, 15. 

 Swarming of " anopheles," 55. 

 Synoptic tables, 32, 37. 

 Syrphidce, 4. 



