Vol. XV, 



Ninth Supplettient to the A. O. U. Check-List. IO3 



Geog. Dist. — South Pacific. Accidental near Guadalupe 

 Island, Lower California. {Cf. Anthony, Auk, XV, Jan. 

 1898,39.) 



129. Merganser americanus (Cass.). 



By a typographical inadvertence in the 2d. ed. of the Check- 

 List the concordance of this species was left blank. {Cf Coues, 

 Auk, XIV, 1897, 316.) The figures should stand as in the 1st 

 ed. of the Check-List, namely: 



[B6n, C 521, R636, C 743-] 



The subgenera Chaulelasmus, Mareca, Nettion, and 



Querquedu-la (Check-List, 2d ed., pp. 49-5 1 ) are raised to the 

 rank of genera. Hence Nos. 135 to 141 will stand as follows: 



135. Chaulelasmus streperus (Linn.). 



Anas strcpera Linn. S. N. ed. 10, I, 1758, 125. 

 Chaulelasmus streperus Bonap. Geog. and Comp. List, 1838, 

 56. 



136. Mareca penelope (Linn.). 



Anas penelope Linn. S. N. ed. 10, I, 1758, 126. 

 Mareca penelope Selby, Br. Orn. II. 1833, 324. 



137. Mareca americana (Gmel). 



Anas americana Gmel. Syst. Nat. I, ii, 1758, 526. 



Mareca americana Stephens, Gen. Zool. XII. ii, 1824, 135. 



[138.] Nettion crecca (Linn.). 



Anas crecca Linn. S. N. ed. 10, I, i75 8 > I26 - 

 Nettion crecca Kaup, Skizz. Entw.-Gesch. Eur. Thierw. 

 1829, 95. 



139. Nettion carolinensis (Gmel.) . 



Anas carolinensis Gmel. S. N. I, 1788, 533. 

 Nettion carolinensis Baird, Bds. N. Am. 1858, 777. 



