PREFACE. 



This paper is my report to the State Crop Pest Commis- 

 sion and Gulf Biologic Station of Louisiana, by whom I was 

 employed during a part of the summer of 1905. During most 

 of my stay in the State I was located at the Gulf Biologic- Sta- 

 tion, on the gulf coast, about thirty miles from the Texas State 

 line. Mr. Wilinon Newell, Secretary of the Crop Pest Com- 

 mission, and Prof. B. H. Guilbeau, Director of the Gulf Biologic 

 Station, showed me every consideration, and it was on account 

 oj their interest and suggestions that the work was undertaken. 

 I desire to express my appreciation, not only for what these two 

 gentlemen have done, but also for what many of their asso- 

 ciates have done to aid the progress of this work. 



The drawings, with the exception of those of Chrysops and 

 those otherwise accredited, were made by Miss Lumina C. Rid- 

 dle, of Columbus, Ohio. 



JAMES S. HINE. 



Columbus, Ohio, February 1, 1906. 





