36 bulletin: museum of comparative zoology. 



Tangara heinei Cabanis. 



Procnias heinei Cabanis, Mus. Hein., 1850, 1, p. 31 (Colombia). 



Tanagra (Aglaia) atricapilla (not Tanacjra atricapilla Gmelin, 1789) 

 Lafresnaye, Rev. zool., 1843, p. 290 (Colombia). 



Type.— M. C. Z. 76,923, Lafr. coll. 2,931. 



Since Lafresnaye's name for the Black-capped tanager is preoccupied 

 by Tanagra atricapilla Gmel., we take for the species the only other 

 name available in synonymy. 



Iridosornis rufivertex rufivertex (Lafresnaye). 



Arremon rufivertex Lafi'esnaye, Rev. zool., 1842, p. 335 excl. refer- 

 ence to Florent-Prevost (Bolivia). 



Cotype.— M. C. Z. 76, 981, Lafr. coll. 2,951. 



Cotype.— M. C. Z. 76,982, Lafr. coll. 2,950. 



Tanagra duhusia Bonaparte, Consp. avium, 1850, 1, p. 239 (Colom- 

 bia). 



In his original description of this tanager Lafresnaye referred to 

 "Florent-Prevost. zool. du voy. de la Venus," saying also "elle est 

 figure dans la voyage de la Venus." This was a mistake. The bird 

 Lafresnaye had in mind being Tanagra ruficcrrix Prevost and Des Murs 

 (now Tangara ruficervix (Prevost and Des Murs)). Later Lafresnaye 

 recognized his mistake in confusing his bird and Prevost's, and con- 

 sistently referred to the bird described by himself as "Nob.," crossing 

 out the reference to Prevost on the original label of his specimens. The 

 cotypes of Arremon rufivertex Lafr. are thus Lafresnaye's owaa speci- 

 mens having nothing to do with Tanagra ruficervix Prevost and Des 

 Murs, and Lafresnaye's name must supplant Bonaparte's duhusia 

 in current use for the species. With Lafresnaye's cotypes, original 

 labels, and description before us, we believe this change of names 

 correct. If, however, our disposition of names be considered errone- 

 ous, then the name Iridosornis Lesson must go. Lesson (Echo du 

 Monde Savant, 1844, p. 80) in specifying the type of his genus states 

 that — " Le type de ce genre, bien distinct dans la tribu des tangaras, 

 a ete decrit par M. Florent Prevost sous le nom' d' Arremon rufivertex 

 {Zool. de la Venus et Revue zool., 1842, p. 335)," evidently meaning 

 Lafresnaye's bird and not Tanagra ruficervix Prevost and Des Murs. 

 If, however, the type of the name Arremon rufivertex is not Lafresnaye's 



