LIST OF ILLUSTRATIONS 



1. The common domestic mosquitos : Stegomyia calopus and 



Culex fatigans (after Goeldi) . . . Frontispiece 



FACING PAGE 



2. Culex and Anopheles . . .18 



3. Larva of Stegomyia calopus. Breathing- tube of Culex larva 18 



4. Eggs, egg-rafts, and pupae of domestic mosquitos. The birth 



of the mosquito from the pupa (after Reaumur) . 26 



5. The larval metamorphoses (after Blanchard) ... 26 



6. Head of male Culex and head of male Anopheles (after 



Newstead) 33 



7. Plan of breeding-places of domestic mosquitos at New 



Orleans (after Boyce) . . . . . .51 



8. Port Swettenham in the Federated Malay States. Now 



cleared of mosquitos, and healthy (after Watson) . 66 



9. A house cistern. It is a breeding-place for domestic 



mosquitos (after Boyce) . . . . . .71 



10. A water-butt. A breeding-place for domestic mosquitoa 



(after Boyce) 71 



11. A borrow-pit in which domestic mosquitos breed . . 85 



12. A sewage-flooded backyard breeding domestic mosquitos . 85 



13. Port Said on the Suez Canal, formerly very insanitary ; 



now cleared of mosquitos and healthy. Each house in 

 the town is visited by a mosquito brigade at the same 

 hour of the same day every week .... 95 

 ix 



