BRITISH MUSEUM (NATURAL HISTORY). 



56 =^=^=— 



^^^^ FIEST EEPORT 



ON 



ECONOMIC ZOOLOGY. 



BY 



FRED. V. THEOBALD, M.A., 



FOREIGN MEMBER OF THE ASSOCIATION OF ECONOMIC ENTOMOLOaiSTS, WASHINGTON, U.S.A. ; 

 ZOOLOGIST TO THE SOUTH-EASTERN AGRICULTURAL COLLEGE ; ETC. 



Author of " A Moiwgraph of the Culicidae (Mosquitoes) of the World (Brit. Mus.) ' 

 "A Text-Book of Agricultural Zoology"; ^' The Parasitic Diseases of Poultry' 

 " An Account of British Flies," etc. 



LONDON: 

 PRINTED BY ORDER OF THE TRUSTEES. 



SOLD BY 



Longmans & Co., 39, Paternoster Eow, E.G.; B. Quaeitch, 15, Piccadilly, W, ; 



DuLAU & Co., 37, Soho Square, W. ; Kegan Paul, Trench, 



Trubner & Co., Charing Cross Road, W.C. ; 



and at the 



British Museum (Natural History), Cromwell Road, S.W. 



1903. 



(All rights reserved.) 



