No. 22.] HYMENOPTERA GF CONNECTICUT. 437 



f 



equal to one another in length, the terminal joint one-third longer 

 than the preceding and with a faint trace of a suture encircling 

 the same, the head posteriorly hairy ; thorax black and shining, 

 finely sculptured, parapsidal grooves smooth and strongly con- 

 vergent at the scutel, which latter is unevenly rugose and provided 

 with foveas separated by a smooth ridge ; legs uniformly reddish 

 brown except the claws which are black, the middle of the pos- 

 terior side of the hindmost legs with a dense tuft of hair much 

 longer than in the other legs ; wings hyaline, veins pale yellowish 

 brown, areolet as well as the dark spot that usually represents the 

 same wanting, cubitus reaching only half-way to the first trans- 

 verse vein, radial area open; abdomen black and shining, first, 

 second and third segments above subequal, the first segment with 

 a round dense tuft of hair on the side, sheath of the ovipositor 

 not exserted. 



The galls of this species occur on Nepeta glechoma, and are 

 either simple or compound, appearing on the leaves, petioles or 

 stems ; the simple ones are round, vary in size from 3 to 18 mm. 

 in diameter, and contain from 1 to 6 or more larval cells; the 

 compound galls are irregular in size and form and have two 

 or more distinct clusters of cells within them. 



The specimens from which this species was first described 

 were cut from the galls 23 October, 1879, presumably from galls 

 taken in the vicinity of Waterbury. The insects thus found were 

 living, which seems to indicate that this species passes the winter 

 in the galls. 



The type locality of this species is probably Waterbury. 



*D. radicum Bassett. Raspberry Root Gall. 

 Female: length nearly 3 mm.; head black and smooth, face 

 with hairs that converge toward the mouth; antennae 13-jointed, 

 the joints distinct, hairy and nearly equal to one another in length, 

 brownish yellow and not shining ; mesonotum shining black and 

 smooth, with parapsidal grooves, two median lines, and a short 

 line on each side over the base of each anterior wing, scutel 

 black, rather regularly grooved and ridged, foveate, the fovea? 

 finely rugose; wings somewhat dusky, veins dark red, areolet 

 distinct, radial area open, the second transverse vein extending 

 along the margin of the wing one-third the length of the area, 

 radial vein thickened at the margin of the wing and usually with 



