BRITISH MUSEUM (NATURAL HISTORY). 
SECOND REPORT 
ON 
ECONOMIC ZOOLOGY 
BY 
FRED. V. THEOBALD, M.A., 
FOREIGN MEMBER OF THE ASSOCIATION OF ECONOMIC ENTOMOLOGISTS, WASHINGTON, U.S.A. ; 
VICE-PRINCIPAL AND ZOOLOGIST OF THE SOUTH-EASTERN AGRICULTURAL COLLEGE ; 
LECTURER ON ECONOMIC ENTOMOLOGY TO SWANLEY HORTICULTURAL COLLEGE, ETC. 
Author of “A Monograph of the Culicidse { Mosquitoes ) of the World [Brit. Mus .)” 
“ A Text-Book of Agricultural Zoology ,” “ The Parasitic Diseases of Poultry ” 
“ An Account of British Flics,” etc. 
LONDON: 
PRINTED BY ORDER OF THE TRUSTEES. 
SOLD BY 
Longmans & Co., 39, Paternoster Row, E.C. ; B. Quaritch, 15, Piccadilly, \Y. 
Dulau & Co., 37, Soho Square, W. ; Kegan Paul, Trench, Trubner & Co., 
Dryden House, 43, Gerrard Street, Soho, W. ; 
AND AT THE 
British Museum (Natural History), Cromwell Road, S.W. 
1904. 
(All rights reserved.) 
