No. 22.] HYMENOPTERA OF CONNECTICUT. 375 



The galls in this species occur as rounded swellings at the leaf 

 nodes of long hollow stalks of Lactuca f canadensis. 



The type locality of this species is probably Waterbury. 

 *A. tumida Bassett. Lettuce Tumor Gall. 



Length 3-3.5 mm. Female: head and thorax black; antennae 

 1 3- jointed, translucent brown at the base to dusky brown beyond, 

 the third, fourth, fifth and sixth joints equal in length, the 

 succeeding joints subequal to the apical one, which is long and 

 shows an indistinct annulation ; facial ridge present, vertex dis- 

 tinctly reticulated, the head as a whole distinctly subquadrate; 

 thorax sculptured like the vertex, pleurae striate, the parallel lines 

 on the mesonotum indistinct, median line present, parapsidal 

 grooves almost parallel until close to the scutel, where they 

 converge, lines from the scutel toward the base of the wings 

 distinct ; the appressed microscopic hairs on the thorax giving to 

 it a silky appearance and somewhat obscuring the sculpture of the 

 same; scutel slightly rugose and with somewhat coarser hairs 

 than the rest of the dorsum of the thorax ; f oveae of the scutel 

 not smooth ; legs dark reddish brown, claws simple ; wings with a 

 faint smoky tinge, their veins yellowish brown ; areolet wanting ; 

 cubitus reaching two-thirds of the distance to the first transverse 

 vein, radial area closed ; abdomen shining, semi-translucent 

 brown, its second segment with a small dense tuft of hairs far 

 down on the sides of the anterior margin, in some specimens a 

 few hairs seen over a much larger portion of this segment, the 

 third segment a little shorter than the second. The male black, 

 except for the legs and antennae, the latter 14- jointed and dark 

 brownish red, with the third joint curved and incised, and 

 yellowish brown. 



Galls occur as swellings of the main stalks of a variety of 

 Lactuca that was found in an old and dry field. 



The type locality of this species is probably Waterbury. Also 

 Stonington, 14 April 1906 (B. H. W.), New Haven, 24 January, 

 1911 (A. B. C, B. H. W.). 



Ceroptres Hartig. 



C. petiolicola (Osten Sacken). Amblynotusf petiolicola 

 Osten Sacken. A. ensiger Walsh? 



Length 2 mm. ; mostly black ; head and thorax somewhat shin- 

 ing, smooth, 'slightly pubescent, the latter hardly punctate, scutel 



