No. 22.] HYMENOPTERA OF CONNECTICUT. 395 



N. minutus Bassett. 



Female : length 2 mm. ; body, except the antennae and legs, of 

 a very dark brown; antennae 13- jointed as in the male, except 

 that the joints are shorter and the third joint is straight; the first 

 abdominal segment short, the remaining ones combined not longer 

 than deep. Male : a little longer than the female, with the entire 

 body of a semi-transparent amber color, with a shade of brown 

 on the thorax and on the back of the abdomen; antennae 14- 

 jointed, the first three points pale amber, the succeeding joints 

 dusky brown, the first joint club-shaped, the second oval, the third 

 curved, but only slightly incised, the remaining joints of nearly 

 equal length ; thorax smooth and shining, with bands of dark 

 brown, where the parapsidal grooves would normally be, show- 

 ing in certain lights in the living specimens, scutel small, smooth 

 and shining, its foveae wanting, but the furrow separating the 

 mesothorax and scutel broad and deep; wings with a slightly 

 smoky tint, the cubitus reaching quite to the first transverse vein, 

 areolet present, radial area partly closed by the thickened border 

 of the wing; legs of a uniform pale amber color, claws dusky 

 brown ; abdomen smooth, shining and petiolate and tapering to a 

 cone-like point at each extremity. 



The galls are pubescent, usually of a pinkish color and found 

 on the white oak {Quercus alba). 



Loxaulus Mayr. 



L. mammula Bassett. 



Female : length 2 mm. ; head yellowish brown, the vertex 

 finely sculptured, face rounded, with a few scattered hairs, and 

 a brush of long bristly hairs on the mentum, tips of the mandibles 

 faintly dusky; antennae 13- jointed, first joint club-shaped, abruptly 

 truncate, the second regularly ovate, the third and fourth slender, 

 the third a trifle shorter than the two preceding combined, the 

 fourth as long as the first, the first four joints of a uniform clear 

 yellowish brown, while the remaining ones are of a dull dusky 

 brown; thorax dark brown, semitranslucent, the scutel and post- 

 scutel almost black, mesothorax smooth and shining'except when 

 viewed under a high power which reveals fine rugosities, parap- 

 sidal grooves wanting, scutel darker and more strongly rugose 

 than the mesothorax, scutellar foveae wanting; anterior and 



