THE CANADIAN ENTOMOLOGIST. 



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terminal joints of posterior tarsi, brown. Wings hyaline, with short 

 cilia? ; venation as in Tetrastiches. 

 Hab.— U. S. 



Sub-family Trichogrammin^e. 



Trichogramma Westwood. 



(19) Trichogramma acuminatum n. sp. 



Female, length .03 ; male, .02 inch. Honey-yellow; eyes purplish- 

 brown ; legs pale or white. The abdomen in the female is acuminate- 

 ovate, about twice as long as the head and thorax combined, with a 

 lateral and a ventral row of five or six brown spots. In the male the 

 abdomen is obtuse behind, not longer than the head and thorax com- 

 bined. Antenna? pilose. The wings are strongly ciliate, the fore pair 

 broadly rounded with a dusky blotch beneath the stigma, the hind pair 

 rather narrowed and pointed at apex. 



Described from two female and one male specimens, reared from a 

 corn-leaf, and probably parasitic on the eggs of some leaf miner. 



(20) Trichogramma nigrum. 



Female. Length .02 inch. Robust, black, polished. Antenna? 

 short, stout, brown. Legs entirely white. The scutellum is rather high 

 testaceous, the extreme tip white. The abdomen is sessile ovate, not 

 longer than the head and thorax, its dorsum somewhat flat. Wings 

 hyaline, as in T. acuminatum without, however, the small blotch beneath 

 the stigma ; veins brownish ; tegula? white. 



Described from two specimens. 



(21) Trichogramma ccrcsarum n. sp. 



Female. Length nearly .04 inch. Reddish-yellow, rather slender. 

 Eyes brown. Abdomen and posterior femora fuscous, the fore and 

 middle femora pale brown ; tibia? and tarsi pale The thorax is trian- 

 gular in front ; the abdomen not longer than the thorax but wider. 

 Wings hyaline, as in T nigrum, but with very strong violet reflections. 



Described from two specimens reared from the eggs of the Membracid 

 Ceresa bubulus Say. 



