386 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



cially at the tip of the first, second and third joints ; thorax smooth 

 and shining, impunctate, without the usual grooves ; legs yellow ; 

 bases of coxae, middle of femora and tibiae brown ; wings hyaline, 

 with the thick veins brown, second transverse vein slender, almost 

 obsolete at the base. 



On leaves of Qiiercus macrocarpa. 



*N. pallidus Bassett. 



Female: length 1,5 mm.; head, except the dark eyes, almost 

 colorless, or at most of a yellowish brown or dark brown to a 

 shining black on the vertex; antennae 13- jointed, the first, second 

 and third joints semitransparent, the first and second not differ- 

 ing much in form and size ; joints beyond the third changing 

 gradually to a dusky brown ; mesothorax smooth and shining 

 throughout ; scutel also smooth and shining, foveas wanting ; legs 

 almost colorless, except a slight brownish tinge on the femora ; 

 claws black and simple ; wings hairy, veins dark and distinct, 

 areolet of medium size, cubitus reaching quite to the first trans- 

 verse vein, radial area long, narrow and open ; abdomen black, 

 the diameter of the same from the dorsal to the ventral side con- 

 siderably greater than the length. Male: mostly of the same pallid 

 hue seen in the antennae and legs of the female; antennae 15- 

 jointed, otherwise as in the female; abdomen with a petiole and 

 with the posterior dorsal portion darker than any other part of 

 the body. 



The galls of this species occur near the end of the aments 

 of Quercus bicolor. 



Type locality: Waterbury. 



°N. favosus Bassett. 



Female : length 2 mm. ; head pale brown, shading to black on 

 the posterior margin of the vertex ; antennae pale yellowish brown, 

 but dusky toward the tip, first and second joints globose, the 

 third very slender, the rest subequal and gradually thicker to the 

 last ; thorax black, less shining and more coarsely sculptured than 

 in the male, the parapsidal grooves less distinct and the scutel 

 less smooth than in the male ; legs dark brown, with paler joints ; 

 wings hyaline with a steel reflection, veins more distinct, areolet 

 generally present; abdomen shining black, its second segment 

 longer than the remaining ones but not concealing them ; the ovi- 

 positor often exserted to such an extent as to be from four to 



