XU MONTHLY PROCEEDINGS. 



■^ . — Length .17-. 20 inch. Black, with a slight seneous tinge in certain lights. 

 Head small, triangular, rugoso-punctate and generally held horizontally beneath 

 the enormously developed thorax. Eyes moderate, oblong oval ; mandibles large, 

 curved and 4-dentate. Antennae shining b.ack, 12-jointed, 9-branched, scape 

 moderately long, cylindrical, 2d large, globular, .3d to 11th short, slightly widened 

 and truncate at tip, each emitting a long, sparsely pubescent, subclavate branch; 

 12-joint very long, about same size as the antennal branches, and making the an- 

 tennae apparently 10-branched; thorax high, enormously developed and trans- 

 versely rugose on prothorax, mesothorax longitudinally rugose, sparsely covered 

 with short pubescence; parapsides wide apart, distinct; scutellum abnormally 

 developed, projecting posteriorly over the abdomen in the form of two long 

 slightly curved horns, which are longitudinally grooved. The wings are fusco- 

 hyaline, and when at rest lie flat under the horns, the marginal vein is long- 

 thick and brownish black, stigma a large brown-black spot with the post-marginal 

 vein very long. Abdomen pedunculated, peduncle longer than abdomen, finely 

 sculptured, cylindrical, slightly bent beyond the middle and thickest at base; the 

 abdomen is very small, triangular and greatly compressed. Legs testaceous, pu- 

 bescent; coxse well developed, black, upper part of femora and upper side of tibife 

 brown, two apical spurs on posterior tibise with one small spine on middle pair. 



9- — Length .10-. 22 inch. Blue-black with seneous tinge. The antennse are 

 filiform and not branched ; the peduncle is much shorter than in the male and 

 the abdomen is much larger, globose, semi-globose or compressed, depending upon 

 the quantity of fluid it contains, and varies in color from a dirty yellow to a yel- 

 low-brown, with the basal portion dusky. 



One specimen was but .10 inch in length, but all the rest averaged 

 from .20-. 2 2 inch. 



Sub-family— EURYTOMIN^. 



EUKYTOMA Rossi. 



6. Ktir.ytoina obtusilob^ n. sp. 



9- — Length .17-.20 inch. Black, coarsely, deeply punctate and covered with 

 long white pubescence ; punctures on face coarsely, deeply reticulate. Antennse 

 9-jointed, scape rufous, flagellum black, or brown-black, with the two apical joints 

 rufous. Legs j'ellowish, tarsi pale. Abdomen much less pointed at apex than in 

 E. prunicola, "Walsh : black, polished, but with the segments beneath up to dorsal 

 surface, finely punctured ; wings hyaline. 



% . — Length .14-.16 inch. Antennse 8-join ted, scape rufous, with a black blotch 

 at apex above, pedicle rufous, with a black spot above, flagellum black, 1st joint 

 longest and quite broad, peduncled at apex, other joints subequal, peduncled and 

 furnished with two whirls of long white hairs, club as long as scape, apparently 

 2-jointed. 



The species is quite near Eurytoma prunicola, Walsh, but is readily 

 distinguished from it by the less pointed abdomen in the female and by 

 the wide flagellar joints in the male. 



Described from four specimens bred from an undetermined cynips gall 

 on Quercus ohtusiloha. 



