CONTENTS 
PAGE 
Chapter I. Introduction ......... i 
Chapter II. The Filariae ......... 1 1 
Chapter III. Avian Filariae ........ 23 
Chapter IV. Human Filariasis ........ 43 
FlLARIA NoCTURNA, DlURNA, AND PeRSTANS 
Geographical Distribution . . . . . 52 
Observations on Distribution in West Africa . . 54 
Periodicity. ........ 57 
Intermediary Host of F. nocturna . . . . - 69 
Filariae in Anopheles costahs . . . . . ~jl 
The Anatomy of the Mouth Parts of the Female 
Anopheles cos talis . . . . . . . 73 
The Relation between F. nocturna and F. diurna . 89 
Appendix. 
Description of Plates to Appendix. 
Plates to Appendix. 
Description of Plates. 
Plates. 
Bibliography. 
