Descriptions of New Parasitic Hymendptera. 



55 



Abdomen sessile, broadly ovate, not longer than the head and 

 thorax united, but a little wider than the thorax, highly pol- 

 ished, impunctate. 



Male — Length, 1.5 mm. Agrees with female in color, but is 

 smaller and narrower, with the flagellum filiform, the joints 

 contracted at apex, covered with very long black bristles, 

 while the abdomen is elongated and much narrower than the 

 thorax. 



Had. — Central Ohio. 



Bred by Prof. F. M. Webster, from a Cecidomyiid Gall, 

 Lasioptera sp., found on Muhlenbtrgia mexicana. 



