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BRITISH MUSEUM (NATURAL HISTORY). 



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 ^'^^'^ SECOND EEPOET 



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ON 



ECONOMIC ZOOLOGY. 



BY 



FRED. V. THEOBALD, M.A., 



FOKKIGN .MKMIiEn OF THE ASSOCIATION OF KCONOJIIC ENTOMOLOfSlSTS, WASHINGTON, U.S.A. 



VICE-PHINCIPAIi AND ZOOLOGIST OF THE SOUTH-EASTERN AGRICULTURAL COLLEGE; 



LEOTUREi; ON ECONOMIC ENTOMOLOGY TO SWANLEY HORTICULTURAL COLLEGE, ETC. 



Author of "A Monograph of the Ciilicida^ {Mosqaitoes) of the World {Brit. Miniy 

 " .1 Text-Book of Agricultural Zoology " " The Parasitic Diseases of Poultry ' 

 "All Account of Britisli Flics," etc. 



LONDON: 



PRINTED BY ORDER OF THE TRUSTEES. 



SOLD BY 



Longmans & Co., 39, Patebnostek Row, E.G. ; B. Quaritch, 15, Piccadilly, W. ; 



DuLAU & Co., 37, SoHO Squaee, W. ; Kegan Paul, Trench, TrCbneu & Co., 



Dbyden Housk, 43, Gkrbabd Street, Soho, W.; 



and at the 



BiuTi.-^ii Musr.iM (Natuhai, Ifisiouy), Ckomweli, Koad, S.W. 



1!»04. 



{All rights reserved.) 



