88 PROCEEDINGS OF THE NATIONAL MUi^EVM. voi. in. 



about three times as long as the diameter of an ocellus; antennae 

 27-jointed in the type, the first flagellar joint more than three times 

 as long as thick; antennae inserted above the middle of the eyes. 

 Thorax smooth, the parapsidal grooves very short; propodeum 

 smooth, polished; stigma of the forewing moderately broad, the 

 radius arising before its middle; second abscissa of radius one-third 

 lonsrer than the first transverse cubitus ; third abscissa of radius twice 

 as long as the second and attaining the wing margin very slightly 

 above the extreme wing apex; recurrent nervure joining the second 

 cubital cell. First abdominal tergite rugose, following tergites 

 smooth. Body color reddish stramineous; eyes black; flagellum 

 blackish; wing veins and stigma brownish. 



Type-locality. — St. Vincent Island, West Indies. 



Type.— C&t. No. 19371, U.S.N.M. 



Six male specimens collected by H. H. Smith. The species is like 

 interstiiialis Ashmead except for the smooth propodeum, non- 

 foveolated mesopleural impression and the noninterstitial recurrent 

 nervure. 



OPIUS DIASTATAE Ashmead. 



Bracon diastatae Ashmead, Proc. U. S. Nat. Mus., 1888, vol. 11, p. 617. 

 Opius diastatae (Ashmead) Gahan, Can. Ent., vol. 45, 1913, p. 150 — (Ashmead) 1 

 Phillips, Joiim. Agri. Res. U. S. Dept. Agri., vol. 2, p. 29, pi. 4, fig. 2. ^ 



Habitat. — Florida, Alabama, and Indiana. 



Host. — Agromyza parvicomis. I 



OPIUS BRUNEIPES Gahan. 



Opius bnmeipes Gahan, Can. Ent., vol. 45, 1913, p. 148. 



HaMtat. — Florida and Maryland. 

 Host. — Agr&my^.a pusilla. 



OPIUS ARIDIS Gahan. 



Opius aridis Gahan, Can. Ent., vol. 45, 1913, p. 147. 



Habitat — Arizona . 



Host. — Agromyza pusilla. 



OPIUS SALVIKI Ashmead. 



Opius salvini Ashmead, Journ. Linn. Soc. Lend. Zool., vol. 25, 1894, p. 134. 



Habitat. — St. Vincent. 

 Host. — Unknown. 



OPIUS MELANOCEPHALUS Ashmead. 



Opius melanocephalus Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25. 1894, 

 p. 134. 



Habitat. — St. Vincent. 

 Host. — Unknown. 



