126 PROC. ENT. SOC. WASH., VOL. 20, NO. 6, JUNE, 1918 



Tabanus americanus Forster 



May 12, 1916. Mosier and Snyder. 

 March 25-29, 1917. Mosier and Snyder. 

 March 30 June 30, 1917. Mosier. 

 March 4, 15, 1918. Females. Mosier. 



April 14, 16, 19 and 20. Males and females. Mosier and Snyder 

 to May 25, Mosier 



Tabanus turbidus Wied. May 16, 1918 Mosier. 

 Tabanus trijunctus Walker. 



May 12, 1916. Mosier and Snyder. 

 Apr. 23 to June 30, 1917. Mosier. 

 April 1, 191S. Females. Mosier. 



April 14, 15 and 20 Males and females. Mosier and Snyder. 

 to May 11, Mosier. 

 Tabanus melanocerus Wied. 



March 29, 1917. Mosier and Snyder. 

 June 2, 1918; Mosier. 

 Tabanus -1918 Mosier. 

 Tabanus alratus Fabr. 



March 17, 1918. Mosier. 

 Tabanus lineola Fabr. 



March 10, 1918. Females. Mosier. 



April 14 to 20. Males and females. Mosier and Snyder. 

 to May 13 Mosier. 

 Tabanus qumquevittatus Wied. 



March 29, 1917. Mosier and Snyder. 

 Tabanus flavus Macq. 



March 15, 1918. Mosief. 

 April 1 and 4. Mosier. 

 April 19, 1918. Mosier and Snyder. 

 to May 30 Mosier. 

 Tabanus pumilus Macquart. 



April 4, 1918. Mosier. 

 Ihachlorus ferrugatus Fabr. 



April, 1918. Mosier and Snyder. 

 Chrysops plangens Wied. 



March 29, 1917. Mosier and Snyder. 

 April 19, 1918. Mosier and Snyder. 

 Chrysops flavidus Wied. 



March 28, 1917. Mosier and Snyder. 

 April 23, 1918, Mosier and Snyder. 



