No. 22. J HYMENOPTERA OF CONNECTICUT. II3 



2. Clypeus and labrum black; head densely punctate, opaque; 

 clypeus very slightly emarginate beneath and acuminate 

 at tip; body black, with angles of pronotum, tegulse, tro- 

 chanters, apices of femora, especially the front pair, tibiae, 

 and tarsi, yellowish ferruginous; posterior tibiae and tarsi 



somewhat infuscatcd. Length 4.5 mm calif omicus 



Clypeus and labrum pale; head and thorax punctate; clypeus 

 squarely truncate; frontal crest rounded, almost wanting; 

 antennal segments three to five subequal; procidentia 

 very broad, obtusely, strongly keeled; body black, with 

 clypeus, labrum, and mouth-parts pallid; angles of pro- 

 notum, tegulae, more or less of apical half of femora, 

 anterior tibiae and tarsi, and basal two-thirds of tibise, yel- 

 lowish. Length 5.5 mm proximatus 



D. appendiculatus (Hartig). Pristiphora grossularia Walsh. 

 Gymnonychus appendiculatus Hartig. Larva feeds on goose- 

 berry. New Haven. 21 April, 1896 (W. E. B.) ; Orange, 13 

 April 1911 (B. H. W.). 



D. californicus (Marlatt), Gymnonychus calif omicus Mar- 

 latt. Larva feeds on pear. New Haven (H. L. V.), 



*D. proximatus (Norton). Nematus proximatus Norton. 

 Gymnonychus proximatus Norton. Connecticut (E. N.). 



Pristiphora Latreille. 

 Key to Species. 



1. Thorax and abdomen black 2 



Thorax or abdomen or both in part pale 3. 



2. Head small, narrow, and not much more than half the width 



of thorax; vertex smooth, ridges rounded, sub-obsolete; 

 median fovea minute and circular; third antennal segment 

 longer than fourth; body shining black, with anterior and 

 middle tibiae and tarsi yellowish; posterior tibis with 



basal two-thirds whitish. Length 5 mm sycophanta 



Head nearly as wide as thorax; vertex without ridges and 

 deeply, coarsely punctate; third antennal segment longer 

 than fourth; body shining black, with apex of clypeus, 

 labrum, tegulje in the female, apices of coxae, trochanters, and 

 tibiae in great part, pallid; anterior tarsi somewhat infus- 

 catcd; apical half of posterior tibiae and tarsi black. Length 

 5 mm banksi 



3. Abdomen entirely black on the dorsum 4 



Abdomen in part pale on the dorsum 6 



8 



