G54 NEW SPECIES OF BRACONID.E. 



, Subfamily OPIINiE. 



OPIUS Weamael. 

 Opius authomyiee n. sp. 



FewJe. — Length, 4""". Black, smooth, polished, the terminal seg- 

 ments with the sutures after the 3d more or less piceous ; palpi white; 

 legs honey-yellow. The antennae are long, cylindrical, 10-joiuted: pa- 

 rapsidal grooves not impressed; on the posterior portion of the meso- 

 notum, immediately in front of the scutellum, is a large, deep, oval 

 fovea, the bottom of which is transversely wrinkled ; mesopleura ruga- 

 lose beneath the anterior wings and along the basal margins, the disk 

 smoother with an irregular impression ; the scutellum is much elevated, 

 the disk rugose, with a deep transverse fovea at base, divided into two 

 parts by a delicate carina ; metathorax rugose. The abdomen is cylin- 

 dric-ovate, sessile, the ovipositor hardly exserted ; the 1st segment is 

 sculptured and with lateral longitudinal grooves. Wings hyaline, iri- 

 descent; stigma and veins pale brown; the submedian cell is slightly 

 longer than the median ; the recurrent nervure joins the 2d submargi- 

 nal cell at the basal angle, and is almost interstitial with the 1st trans- 

 verse cubital nervure ; the 1st branch of the radius is very short, 

 about one fifth the length of the 2d branch ; the 2d submarginal cell is 

 longer than the 1st, and its upper margin is much shorter than the 

 lower. 



Habitat. — Lansing, Michigan. 



Described from one specimen received from Prof. A. J. Cook, labeled 

 "Ac. Cat. 722, parasite on Anthomyia, mining leaves of dock." 



Opius foveolatus n. sp. 



Male. — Length, 3 mm . Black, smooth, polished; the terminal one-third 

 of 2d abdominal segment and the following segments, except sutures, 

 brown; palpi pale; legs reddish yellow. The antenna; are but 35- 

 jointed, slender, cylindrical, pubescent; the parapsidal grooves are 

 sharply defined anteriorly for two-thirds the length of the mesonotum; 

 posteriorly they are entirely wanting; there is an oval depression or 

 fovea on mesonotum just in front of the scutellum, as in previous spe- 

 cies, but not so deep ; mesopleura smooth, with a shallow, impressed 

 line on the disk ; scutellum rugose, foveate at base, the fovea divided 

 into two parts by a carina; metathorax rugose, a carina on the post- 

 scutellum ; abdomen ovate, smooth, polished, the 1st segment longitu- 

 dinally aciculated. Wings hyaline, iridescent; stigma and veins pale 

 yellowish brown ; the venation is similar to 0. anthomyim, only the 1st 

 branch of the radius is about half the length of the 2d branch. 



Habitat. — Ames, Iowa. 



Described from one specimen, received from Prof. H. Osborne, labeled 

 "Parasite on pig-weed leaf-miner." The paucity of joints in the an- 

 tenna-, less elevated scutellum, sculpture, and venation of anterior 

 wings, will readily separate this species. 



