334 W. H. ASHMEAD. 



longer tbau thick, the ahrlomeu is clavate, two-thirds the lent;th of thorax, well 

 clothed with a whitish i)ubesceiice; otherwise in color, structure of wings, etc., 

 it agrees with female. 



Hah. — Morgantown, W. Ya. 



Described from % 9 specimens bred by Prof. A. D. Hopkins 

 from a willow twig-gall. The white pubescence is quite characteristic 

 of the species. 



Toryinus persimilis sp, u. 



9 . — Length 3 mm. ; ovipositor 2 mm. Metallic green, shagreened, the meta- 

 notum and basal flap of abdomen blue; scape, pedicel, tegulse and legs, except 

 middle and hind coxse, brownish yellow; pronotum subquadrate, the hind mar- 

 gin obtusely, triangularly emarginated ; metauotum smooth; hind coxie metallic 

 blue and green : flagellum black subclavate, about two and a half times the 

 length of scape, the first funicular joint quadrate. 



Hab. — Morgantown, W. Va. 



Described from a specimen captured May 1, 1891, by Prof A. D. 

 Hopkins. Comes nearest to T. sackenli Asbm. in shape, but differs 

 in color of antenna, coxte, shape of pronotum, and in having a longer 

 ovipositor. 



Subfamily Tridymin.^. 

 TRIDYMITS Eatzeburg. 



Trid.yiniiN robiiiisecola sp. u. 



9 —Length 1.8 mm. Bluish, sometimes with the head in front and tlie mid- 

 dle lobe of niesonotnm metallic green ; scape, trochanters, anterior tibise and 

 middle and hind tibise at tips and all tarsi, honey-yellow. Antenna; inserted 

 just above the clypeus, tlie flagellum subclavate, brown above, yellowish beneath, 

 pubescent, the joints, after the first, wider than long; scutellum longer than 

 wide, convex, with a cross furrow behind the middle, the apical part metallic 

 green ; metauotum very short, smooth, aeneous, with a subobsolete median carina. 

 Wings hyaline, pubescent, the venation brownish, the marginal vein not twi(;e 

 as long as the stigmal, the latter ending in a rather large, rounded stigma, with 

 a very minute uncus, the postmarginal a little shorter than the marginal. Ab- 

 domen sessile, oval, depressed above, purplish or bluish, with metallic reflections. 



The %i is almost wholly blue, with the legs, except the coxa; and hind femora, 

 honey-yellow; flagellum filiform, more densely pubescent, the funicular joints, 

 except the first, being (jiiadrate; specimens occur with the head and thorax dis- 

 tinctly metallic green. 



Hab. — Morgantown, W. Va. 



Described from si)ecimeus bred by Prof. A. D. Hopkins. 

 This species comes close to T. salads Kees, of Eurojoe, but the ab- 

 domen is much shorter and the color of the legs is different. It has 



