26 THE CA.NADIA.N ENTOMOLOGIST. 



Family Chalcidid^. 



Sub-family Pteromalin^. 



Tribe Sphegigastrini. 



Genus Cyrtogaster, Walker. 



2. Cyrtogaster dineutis, sp. n. 



?. — Length, 2.5 to 2.65 mm. Bronze-green, confluently punctate; 

 sides of thorax and beneath bluish, or blue-green, with a conspicuous 

 smooth triangular cupreous spot beneath the insertion of hind wing ; 

 metapleura with some long greyish hairs \ palpi fuscous ; mandibles 

 piceous or rufo-piceous ; scape, pedicel and legs, except coxte, brownish- 

 yellow ; flagellum black or brown-black \ coxte metallic-green ; wings 

 hyaline, the nervures pale. 



The head is broadly transverse, wider than the widest part of meso- 

 thorax, or a little more than three times as wide as thick antero-posteriorly, 

 the punctation finer on face and towards the clypeus, the latterwith some fine 

 converging striae; antennae 13-jointed, inserted a little below the middle of 

 the face, the flagellum subclavate, about one and a-half times as long as 

 the scape ; pedicel long, longer than the first flagellar joint and the two 

 ring-joints combined ; flagellar joints, after the first, wider than long. 

 Thorax with the parapsidal furrows indicated only anteriorly, the prono- 

 tum transverse, much narrower than the mesonotum, the metanotum 

 much produced at apex, confluently punctate, with a carina above ; wings 

 hyaline, the apical two-thirds pubescent, the basal one-third bare ; the 

 marginal and post-marginal nervures are nearly equal in length, about 

 one-third longer than the stigmal, the stigmal nervure ends in a small 

 stigma with a slight uncus. 



Abdomen short ovate, attached to the produced portion of the meta- 

 thorax by a short but distinct petiole, the segments two and three very 

 large, occupying most of the surface, the second with a deep emargination 

 at base, the segments after the third very short, subequal, all united not 

 longer than the third. 



Hab. — Independence, Iowa, 



Bred by Mr. H. F. Wickham from the pupa of Dineutes assitni/is, 

 obtained September i, the flies issuing September 11 and 12. 



This species is probably only a secondary parasite, judging from 

 other bred species of the genus in my collection. 



