47 



thickly set everywhere with punctures of medium size. The occiput 

 and the dorsum of the thorax with a few scattered appressed hairs. 

 The front of the head is vertically grooved for the long first joints 

 of the antennae. Eyes pale red, mouth parts brown. The antennie 

 are about as long as the head and the thorax^ thii-teen-jointed, the 

 first joint pale yellow, second joint dusky, the remaining joints 

 black. The first joint is about equal in length to the four follow- 

 ing, the third short, that and fourth together shorter than the 

 second and about equal to the fifth, the joints widening from the 

 first to the fifth, (except the third which is not wider than the 

 second), the following joints to the eleventh of about equal diameter, 

 thence tapering rapidly, the last three not being clearly distin- 

 guished. The first joint is nearly smooth, the second somewhat 

 hairy, all the others black-pubescent, each with a transverse ring of 

 long appressed yellow bristles. 



The meso-scutellum is broadly rounded behind, the sides with an 

 irregular excavation, the meta-scutellum with an elevated margin and 

 an evident median carina. The sides of the metathorax are densely 

 clothed with long black hairs. 



Wings transparent, veins dusky yellowish, the post-costal and 

 stigmal of equal length, about two-thirds as long as the costal. 

 Wing membrane sparsely pubescent, the veins with a row of stiff, 

 erect black hairs. Patagia dusky yellowish. 



The legs are pale yellow throughout, except the coxse, which 

 are of the body color. The abdomen is smooth and shining 

 except the under sides of the three posterior segments which are 

 pubescent. It is black above and piceous beneath, the edges of 

 the segments being somewhat tinged with brown. 



Length, 2.5 mm. ; head, .95 mm. wide ; thorax, .7 mm. by 1.06 mm. 

 long; antennae, 1.25 mm.; wing, 1.9 mm. 



The specimens from which the above description Avas drawn, were 

 all winged and were bred June 5, 1884, from flaxseeds and larvae 

 of the Hessian fly, obtained at DuQuoin, in Perry countv, July 4, 

 1883. 



The breeding cage from which these specimens emerged yielded 

 no other parasites, but, when examined, were found to contain 

 empty pupa cases punctured as if for the escape of parasitic in- 

 sects, together with a few containing dried up larvae. 



Pteromalus ? fulvipes, n. s. 



(Flate IV. Fig. 2.) 



Under this head I describe, with some hesitancy, several speci- 

 mens whose generic relations it is difficult to make out, owing to 

 the fact that all the examples obtained were wingless. The essential 

 resemblance to Pteromalus leads me, however, to place the species 

 under that genus. 



The head and. thorax a dark bronzed green, and the abdomen 

 above, dark steel-blue. The head is not grooved in front for the 

 first joint of the antennae, but is, like the thorax, thickly punctured 



