TABANID^E 



443 



each abdominal segment, and there are also denticles at the apex of the 

 abdomen. 



A habit common to the adults of most of the Tabanidse of consider- 



FIG. 287. The Ox Gad Fly (Tabanus bovinus, Linn.). 



FIG. 288. The Brimp (H&matopota pluvialis, Linn.). 



able economic importance is that of the adults coming to water to drink. 

 Porchinski 1 has found that by applying kerosene to the pool they frequent 

 that the adults are killed, and Hine 2 that the same oil kills the larvae that 

 fall into the water from eggs laid on plants above. 



1 Vide Bull 20 N. Sc. U. S. Division, Ento, I'.S.A. 



- Tabanidte of Ohio, Ohio State University. Bull, 19, Sc. 7, p. 14, 1903. 



