wo. 2261. NEW REARED PARASITIC HYMENOPTERA—GAHAN. 123 



ORGILUS MELLIPES Say. 



Microgaster mellipes Say, Bost. Journ. Nat. Hist., vol. 1, pt. 3, 1836, p. 261. 

 Microgaster mellipes (Say) TiKCoNxr, Writings Thoiu. Say Entom., vol. 2, 

 1859, p. 712. 



Say's description of this species, the type of which is lost, indicates 

 the presence of complete parapsidal grooves, a closed radial cell, open 

 second cubital cell, and a more or less fusiform abdomen. This com- 

 bination of characters excludes the species from the Microgasterinae, 

 while at the same time they agree with Orgilus, a genus which the 

 writer would place in the subfamily Blacinae. 



Several specimens of what appear to be this species have been reared 

 at Baton Rouge, Louisiana, by Messrs. C. E. Smith and J. L. E. 

 Lauderdale, of the Bureau of Entomology, from Phthorimaea glochi- 

 nella Zeller under Chittenden No. 4150. The writer has chosen a male 

 of this series as a neotype of the species. 



Subfamily Opiinae. 



OPIUS MELLEUS Gahan. 



Biostercs rhagoletis Richmond, Cau. Ent., vol. 47, 1915, p. 294. 



A series of specimens, including two paratypes, of rhagoletis, fur- 

 nished the United States National Museum collection through the 

 courtesy of Mr. William Colcord Woods, have been compared with 

 the type of melleus and agree in every particular. 



Subfamily Vipiinae. 



HABROBRACON AMERICANA Ashmead. 



Trachyusa american<i Ashmead, Bull. Colo. Biol. Assoc, vol. 1, 1890, p. 18. 



The type of this species in the United States National Museum col- 

 lection is similar to H. johannseni Viereck, but may be separated by 

 the fact that the second radial abscissa is as long or a trifle longer 

 than the first intercubitus and the median carina of the propodeum is 

 more distinct. Also resembles H. gelechiae Ashmead, but has the sec- 

 ond radial abscissa longer, a better developed median carina on the 

 propodeum, and the abdomen is slightly narrower. 



Superfamily CHALCIDOIDEA. 



Family CALLIMOMIDAE. 



Subfamily Monodontomerinae. 



Genus LIODONTOMERUS Gahan. 



In the description of this genus the antennae are stated to have two 

 ring-joints. As a matter of fact, there is probably only one true ring« 



