518 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.55. 



Described from three females reared by the writer as parasites of 

 the larva of the grape-berry moth. The paratypes are like the type, 

 except that b has the notauli very faintly marked anteriorly with 

 reddish. 



Family ICHNEUMONIDAE. 



Subfamily Ckyptinae. 



Many of the genera proposed by Foerster in his classification of the 

 Ichneumonidae were described only by the characters given in the 

 keys and were not fixed by the designation of genotype or the inclu- 

 sion of any species. Since their original publication many of these 

 genera have had species included, some probably with entire pro- 

 priety and others by obvious error. In cases where species are the 

 first included in previously atypic genera they become i-pso facto the 

 genotypes of those genera. But, according to Opinion 46 of the In- 

 ternational Commission on Zoological Nomenclature, they can not be 

 the genotypes unless they come under the generic descriptions as 

 originally published. Apparently the only recourse in a case where 

 the first included species does not agree with the original publication 

 of the genus is to consider the genus, as defined by the first included 

 species, as dating from the inclusion of the species and having as its 

 author the author of the species and the generic name as being pre- 

 occupied. It thus becomes a homonym and must be reduced to syno- 

 nymy with the genus with which it does agree, if such is already 

 named, or be given a new name. 



To this class belong the genera Otacustes and Lymeon both of Ash- 

 mead, not of Foerster. These genera are below disposed of as out- 

 lined above. 



Genus CHRYSOPOCTONUS, new name. 



Otacustes AsHMEAD, Ins. Life, vol. 7, 1894, p. 244, not Foerster. 



Type. — Otacustes atriceps Ashmead. 



The genotype, which was also the first species included in Otacustes^ 

 does not agree with the original description of Otacustes Foerster in 

 that the spiracle is round, not oval. In Foerster's key to his family 

 Hemiteloidae (=Tribe Hemitelini Ashmead) it runs to dichotomy 

 49. In the best of the characters used, namely, the relative length of 

 the basal joints of the flagellum and the length of the radial cell as 

 compared with that of the stigma, it agrees with Microtor'us Foerster. 

 but differs in having the dorsal carinae of the petiole weak and the 

 ten flagellar joints before the last in the female longer than broad. 



Couplet 49 should, therefore, be changed to read thus: 



49. Flagellum filiform, thickened toward the apex, the first three joints much 

 lengthened, thin, and of equal length ; radial cell longer than the stigma ; 

 dorsal carinae of first tergite extending to the middle hut weak. 



Orthizcma Foerster. 



