240 Proceedings of the Biological Society of Washington. 



Family MUSCICAPIDAE. 



Stoparola melanops (Vigors). 



The use of Muscicapa melanops Vigors 1 for the Indian bird commonly 

 known as Stoparola melanops is interdicted by Muscicapa melanops Vieillot, 2 

 which is now known as Trichothraupis melanops (Vieillot) (olim Tricho- 

 thraupis quadricolor [Vieillot]). The next available name for Stoparola 

 melanops is Muscicapa thalassina Swainson, 3 and this species, since Stopo- 

 rala is the correct spelling of its generic name, 4 will, therefore, now stand 

 as Sloporala thalassina (Swainson) . 



Family PRIONOPIDAE. 



Hemipus obscurus (Horsfield). 



The Muscicapa obscura of Horsfield, 8 which is now Hemipus obscurus 

 (Horsfield), is unavailable for use in this connection, because of the prior 

 Muscicapa obscura Gmelin, 6 which is the Phaeornis obscura (Gmelin) of mod- 

 ern ornithologists. For the proper name of Hemipus obscurus (Horsfield) 

 we must, therefore, turn to Muscicapa hirundinacea Temminck, 7 and now 

 call the species Hemipus hirundinaceus (Temminck). 



Family TANGARIDAE. 



Tachyphonus rufiventris (Spix). 



The South American tanager described by Spix as Tanagra rufiventer, 8 

 must be rechristened, since its present name is invalidated by Tanagra rufi- 

 ventris Vieillot, 9 now known as Tanagra rufiventris Vieillot (olim Euphonia 

 rufiventris [Vieillot]). The difference in the spelling of the specific name 

 rufiventer Spix and that of rufiventris Vieillot is merely that of the difference 

 in gender, rufiventer being the masculine and rufiventris the feminine nomi- 

 native, and as such of course identical. Since Tanagra rufiventer Spix is 

 thus left without a tenable name, it may be called Tachyphonus metallactus, 

 nom. nov. 



iProc. Zool. Soc. Lond., 1831 (March 2, 1832), p. 171 (Himalaya Mountains). 



2Nouv. Diet. d'Hist. Nat., XXI, 1818, p. 452 (Paraguay). 



3 Nat. Hist. Flycatchers, 1838, p. 252 (India). 



467. Oberholser, Proc. Biol. Soc. Wash., XXXII, April 11, 1919, p. 47. 



STrans. Linn. Soc. Lond., XIII, May, 1821, p. 146 (Java). 



6Syst. Nat., I, ii, 1789, p. 945 (Hawaiian Islands). 



Wouv. Rec. Planch. Col. d'Ois., Ill, livr. 20, March, 1822, pi. 119 (Java). 



8Avium. Spec. Nov. Bras., II, 1825, p. 37, pi. L, fig. 1 (Para, Brazil). 



SNouv. Diet. d'Hist. Nat., XXXII, 1819, p. 426 (Brazil). 



