400 Al'PEXDIX. 



Genus PODICEPS. Type by subsequent designation of Gray 

 (List Gen. Bds. 1st ed. 1840, p. 76) : P. cristatus. 



Genus RALLUS. Type by subsequent designation of Gray 

 (List Gen. Bds. 1st ed. 1840, p. 71) : R. aquaticus 

 Linn. 



Genus PORZANA. Type by tautonymy and monotypy : 

 P. porzana. (Linn.). 



Porzana porzana. For the reason of the change of this name 

 see Ciconia ciconia, p. 387. 



Porzana pusilla intermedia. Hermann's name .Rallus inter- 

 medius dates from 1804, Vieillot's Rallus bailloni from 

 1819. 



Genus CREX. Type by tautonymy : C. crex (Linn.). 



Crex crex. For the reason of the change of this name see 

 Ciconia ciconia, p. 387. 



Genus GALLINULA. Type by tautonymy : G. gallinula 

 Briss. G. chloropus (Linn.). 



Genus FULICA. Type by Linnean tautonymy and by sub- 

 sequent designation of Gray (List Gen. Bds. 1st ed. 

 1840, p. 72) : F. atra Linn. 



Genus COLUMBA. Type by subsequent designation of 

 Vigors (Trans. Linn. Soc. Lond. xiv. 1825, p. 481) : 

 C. etnas Linn. 



Genus STREPTOPELIA. Type by subsequent designation of 

 Gray (Cat. Gen. Subgen. Bds. 1855, p, 150): T. risorius 

 (Linn.). Turtur of Selby (Nat. Libr. Orn. v. 1835, 

 p. 169), used for the Turtle-Bove in the previous 

 edition of this work, is preoccupied by Turtur Boddaert, 

 1783, used for an entirely different pigeon, Columba 

 afro, Linn., the Blue-spotted Dove of Africa (cf. 

 Mathews, Nov. Zool. xvii. 1910, p. 503). 



Genus SYRRHAPTES. Type by monotypy: S. paradoxus 

 (Pall.). 



