No. 22.] HYMENOPTERA OF CONNECTICUT. 397 



hyaline, veins faint, radial area open, areolet wanting; abdomen 

 polished and shining. 



The type locality of this species is probably Connecticut; the 

 describer of this species observed it ovipositing in the buds of 

 Quercus ilidfolia, 26 May, 1871. 

 *D. cornigis Bassett. 



Female: length 2.5 mm.; head black, with very fine reticula- 

 tions; antennae 14-jointed, the first joint club-shaped, the second 

 thicker than the first and almost equal in length, the third almost 

 two-thirds as long as the first two, all the joints to the fourth light 

 yellowish brown, the fifth a yellowish to dark brown at the tip, 

 remaining joints very dark brown, the thirteenth and fourteenth 

 separated by an indistinct suture, the former not so dark brown 

 as the joint preceding it ; tho/ax not shining, mesonotum mostly 

 finely, evenly, and transversely wrinkled, scutel more finely 

 wrinkled than the mesonotum and without foveae; the legs with 

 the femora and tibiae dark brown except at the joints which with 

 the coxae and tarsi are yellowish brown, claws simple; wings 

 hyaline, veins pale yellow, almost colorless, areolet wanting and 

 the cubitus so indistinct as to be almost imperceptible even half- 

 way to the first transverse vein, radial area open, the second 

 transverse vein not quite reaching to the anterior edge of the 

 wing and extending posteriorly no further than the point where 

 the areolet would normally be found; abdomen black, polished, 

 somewhat depressed, with the third segment half as long as the- 

 second and the following segments concealed in the dry speci- 

 mens. 



The type locality is Waterbury. The original specimens were 

 taken in the spring of the year in the act of ovipositing in the 

 buds of Quercus prinoides. 



*D. longicornis Bassett. 

 Male : length a little more than 2 mm. ; head black ; first and 

 second joints of antennae globose and equal in length, third joint 

 one-third longer than the first two combined, fourth equal in 

 length to the first two, fifth almost equal in length to the fourth, 

 the following joints gradually shorter, and all dark brown ; 

 thorax black and shining in that portion which is within the deep 

 parapsidal grooves, median and alar lines wanting, scutel coarsely 

 rugose and with short scattered hairs, foveae obsolete but replaced 



