U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



BIBLIOGRAPHY 



THE MORE IMPORTANT CONTRIBUTIONS 



AMERICAN ECONOMIC ENTOMOLOGY. 



PREPARED, BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 

 BY 



SAMUEL HENSHAW. 



PART II. 



THE MORE IMPORTANT JOINT WRITINGS 



OF 



B. D. WALSH and C. V. RILEY. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1889. 



61 



