74 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



OPIUS SANGUINEUS Asbmead. 



Plate 35, figs, la, 16. 



Phaedrotoma sanguinea Ashmead, Proc. U. S. Nat. Mus., 1888, p. 655. 

 Opius sanguinca (Ashmead) Marshall, Trans. Ent. Soc. Lond., 1891, p. 47. 

 Phaedrotoma sanguinea Ashmead, Insect Life, vol. 5, p. 135. 



Habitat. — District of Columbia and Missouri. 



Host. — Trypeta electa. 



OPIUS KUKAKENSE Ashmead. 

 Desmiostoma kukakeme Ashmead, Proc. Wash. Acad. Sci., vol. 4, 1902, p, 251. 

 Habitat. — Alaska. 

 Host . — Unknown. 



OPIUS INDOTATUS Viereck. 



Biosteres indotatus Viereck, Trans. Kansas Acad. Sci., vol. 19, 1905, p. 273. 



This species has not been recognized and it can not be separated 

 from the foregoing species by the original description. 

 Habitat. — Kansas. 

 Host. — Unknown. 



OPIUS POLITUS Provancher. 



Plate 35, fig. 5. 



Opius politus Provancher, Nat. Canad., vol. 14, 1883, p. 16. 

 Opius politus Provancher, Faun. Canad. Hymenop., 1883, p. 804. 

 Hedylus politus Provancher, Add. Faun. Canad. Hymenop., 1888, p. 381. 



Very similar to antJiomyiae but differing in the chai'acters made 

 use of in the table of species. 



Habitat. — Canada and New York. 

 Host. — Unknown. 



OPIUS ANTHOMYLAE Ashmead. 



Plate 35, fig. 6. 



Opiu^ anthomyiae Ashmead, Proc. U. S. Nat. Mus., 1888, p. 664. 



Habitat. — Michigan. 



Host. — A dipterous leaf-miner in dock. 



OPIUS FOVEOLATUS Ashmead. 

 Plate 35, fig. 3. 

 Opius foveolatus Ashmead, Proc. U. S. Nat. Mus., 1888, p. 654. 



A series of specimens of this species have been reared by the writer 

 at College Park, Maryland, from leaves of Chenopodium album, mined 

 by Pegomyia, sp. 



Habitat. — Maryland and Iowa. 



Host. — Pegomyia, sp. 



