Vo l s ^ VI ] Ninth Supplement to the A. O. U. Check- List. 1 29 



The evidence that ancethetus is a " misprint " is not satisfactory. 



88. Puffinus borealis Cory vs. P. kuhlii (Bon.). Cf Sal- 

 vin, Cat. Bds. B. M. XXV, 1896, 426. 



The proposed change is undesirable, in view of fairly satisfac- 

 tory evidence that the two names represent distinct species. 



106.2. Oceanodroma cryptoleucura Ridgw. vs. Proceltaria 



castro Harcourt. Cf. Grant, Ibis, Apr. 1898, 314. 



It is probable that Harcourt's name castro was applied to a 

 species distinct from O. cryptoleucura Ridgw. 



1'51. Clangula clangula americana (Bonap.) vs. Clangula 



clangula. Cf. Elliot, Wild Fowl, 1898, 178, 289. 



There is no apparent reason for the proposed change. 



Subfamily PLECTROPTERIN-S5. Cf. Salvadori, Cat. 

 Bds. B. M. XXVII, 1895, 45 ; Elliot, Wild Fowl, 1898, 273. 



The introduction into the Check-List of this heterogeneous 

 Old World group for the genus Aix Boie is considered undesir- 

 able, even though the genus Aix may not be strictly referable 

 to Anatince. 



Genus AIX (Check-List, 2d ed., p. 52). vs. Atx. Cf. B. O. U. 

 Check-List Br. Bds. 1883, 123; Elliot, Wild Fowl, 1898, 

 273- 



Genus Harelda (Eighth Suppl. Check- List, in Auk, XIV, 1897, 

 124) vs. Havelda. Cf. Elliot, Wild Fowl, 1898, 290. 



These proposed changes are rejected as being contrary to 

 Canon XL of the A. O. U. Code. 



Genus OLOR (Check-List, 2d ed., p. 65) vs. Cygnus. Cf. 

 Elliot, Wild Fowl, 1898, 265. 



No reason is evident for adopting the proposed change. 

 9 



