37^ CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



rugose; a slight carina between the antennae, mandibles brown, 

 palpi yellow, antennae 12- or 13- jointed, mostly yellow, but with 

 their bases blackish, four or five joints of the flagel nearest its 

 base elongated; legs infuscated, except at the joints, tarsi pale, 

 their tips black ; wings hyaline, radial area closed, second trans- 

 verse vein oblique and arcuated, areolet corresponding in posi- 

 tion to the middle of the radial area ; abdomen dark brown, shin- 

 ing, its petiole short, second segment pubescent at base, third 

 segment more than twice as long as the second segment. 



Bred from the gall of Andricus petiolicola Bassett. In addi- 

 tion to the. above description it may be added that the male has 

 the middle and hind femora and the corresponding tibiae dusky, 

 and a black line on the upper side of the fore femora ; the female 

 has apparently 13- jointed antennae and infuscated femora. 



C. pisum Osten Sacken. Oak Pea Gall. 



Length about 3.5 mm. (female) ; head black, pubescent, man- 

 dibles and the mouth brownish red, face aciculate, with an oblong 

 swelling under the antennae, vertex microscopically punctate, 

 antennae 13-jointed, brownish yellow, almost filiform, nearly as 

 long as the body, with the fourth joint slightly longer than the 

 third, the following joints subequal except the last one which is 

 twice the length of the joint next preceding, the apical joint 

 sometimes divided into two parts by a distinct suture ; thorax con- 

 colorous with the head, densely pubescent, but very delicately 

 rugose, its parapsidal grooves distinct, the two very indistinct 

 impressed lines between the parapsidal grooves extending some 

 distance from the pronotum backward, scutel with a rough 

 irregular sculpture, pleurae with a polished space; legs yellow, 

 except the extreme bases of the coxae, especially of the hind ones, 

 which are black, and the tip of the tarsi, which is infuscated; 

 wing veins pale yellow, posterior portion of the areolet somewhat 

 indistinct ; abdomen dark brown or black, paler brown along its 

 interior edge, its second joint divided into two unequal parts by 

 a very distinct suture, the anterior part above a little less than 

 half the length of the second, at the base of this second segment 

 the abdomen distinctly downy, ventral valve pale brown, sheaths 

 of the ovipositor not at all projecting above the dorsal line. 



Bred from Cynips pisum Fitch. 



