1910] Brues, North American Parasitic Hymenoptera VIII. 49 



Aneuron gen. nov. 



Similar to Polygnotus, but differing in the structure of the antenna? 

 which have the pedicel and the first and second flagellar joints 

 elongated, slender and of equal length in the female. In the male 

 they are also lengthened, and the second flagellar joint is scarcely at 

 all thickened. Otherwise the type species might be readily mistaken 

 for a true Polygnotus. 



Aneuron anormis, sp. nov. 



Female. Length 2.2 mm. Black; antennae, except club, and legs. 

 except coxa\ reddish yellow ; the thickened parts of the femora very 

 slightly infuscated. Head broad, slightly wider than the thorax; two 

 and one-half times as wide as thick. Ocelli in a triangle, the lateral 

 ones well removed from the eye-margin, but closer to it than to the 

 median ocellus. Eyes oval, slightly, but distinctly pubescent. Vertex 

 quite sharp above, but not distinctly carinated, except indistinctly so 

 on the sides close to the eyes ; transversely striate ; on the occiput with 

 vertical stria\ Cheeks punctulate, as long* as the eye-height. Front 

 finely punctulate ; face coarsely transversely striate. Antennas 10- 

 jointed ; slender, scape reaching to the ocelli, straight and slender ; 

 pedicel, first and second flagellar joints elongate, slender, of approxi- 

 mately equal length and together over three-fourths as long as the 

 scape ; following joints moniliform ; one-half as long as the second 

 flagellar ; apical five joints forming a slender club, but of equal length ; 

 last slightly longer, more slender. Thorax more elongate than in 

 species Polygnotus. Pronotum visible above as a line. Mesonotum 

 nearly smooth ; subshining. without traces of parapsidal furrows except 

 near the base of the scutellum where they are very close together, 

 defining a narrow truncate lobe which projects slightly over the de- 

 pression across the base of the scutellum. Scutellum transverse, very 

 convex, separated from the mesonotum by a very deep depression ; 

 sharply declivous behind and with a thin reflexed margin especially 

 noticeable on the sides. Metathorax very short. Propleurse punctulate 

 above, smooth below; mesopleura polished, with a curved or slightly 

 angulate depression below the middle. Metapleura? thinly pubescent, 

 with a carina defining their upper edge, and with a second one above 

 the middle which forms a triangular area with the marginal carina and 

 the mesopleural suture. Abdomen as long as the head and thorax 

 together, pointed apically. First segment of abdomen subpetiolate, half 



