Letters, Extracts, and Notes. 389 



Aquila clanga Pallas, Zoogr. Ilosso-Asiat. vol. i. 1827, 

 p. 351 : Russia. 



A curious error has slipped in, the meaning of the 

 specific name given namely " maculata = spotted/' 

 instead of ^^fiisca =■ brown." 



Glaucion Kaup, 1829 (p. 178). This name cannot be used, 

 as it is invalidated by Glaucion Oken, Lehrb. der Natur. 

 vol. iii. pt. 1, 1815, p. ix, used for a Mollusc. 



As the Committee consider Anas clangula Linne and 

 Anas albeola Linne to be congeneric, the name to be 

 used is, to me, at present problematical. By American 

 ornithologists these species are refeiTcd to different 

 genera, and therefore the question of priority of publi- 

 cation of the two available names has not been discussed. 

 Stejneger introduced both names in two different 

 publications at practically the same time; so I give the 

 references to both. In my opinion these two Ducks 

 represent different genera. 



The names are : — 



Glaucionetta Stejneger^ Proc. U.S. Nat. Mus. vol. viii. 

 p. 409 (published September 14, 1885). Type (by 

 orig. design.) : Anas clangula Linne. 



Chahitonetta Stejneger, Bull. U.S. Nat. Mus. No. 29, 

 p. 163, 1885 (Advt. dated August 20). Type (by orig. 

 design.) : Anas albeola Linne. 



The latter Avould seem to have priority, as it was 

 probably published within a week of August 20. 



I would accept some blame for these two errors as 

 the facts were known to me, but I apparently over- 

 looked their transmission to Mr. W. L. Sclater. I 

 would here mention that though the Committee have 

 acknowledged my aid, for which acknowledgment I 

 sincerely thank them, such was quite unofficially 

 rendered to Mr. W. L. Sclater, who undertook the 

 nomenclatural work, and to whom is due the thanks 

 of all British and extra-limital ornithologists for the 

 accuracy seen in this List. 



