THE INSECT WORLD. 



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Betelmle japonicus Mats. 



A MONTHLY MAGAZINE DEVOTED TO 

 THE USEFUL APPLICATION AND 8CIEN 

 TI.FIC STUDY OF ENTOMOLOGY, EDITED 



BY 



YASOSHI NAWA 



fo/^A-^^ DIRECTOR OF 



'NAWA ENTOMOLOGICAL LABORATORY 



GIFU JAPAN. 



Vol. XX] JANUARY 



15th, 



1916. 



[No. 1. 



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