1887.] THE FAUNA OF COREA. 591 



davidi, we have thought it advisable to refer them to that bird, 

 especially as they come from a region where the C. davidi hWkeXy to 

 be found. We believe, however, that as matters stand we should 

 have been perfectly justified in describing them as belonging to a 

 new and undescribed species, considering the incomplete and, what 

 is worse, erroneous description which appears to have been given of 

 C. davidi, for we repeat the two specimens from Possiette Bay have 

 nothing whatever to do with C. coscoroba. 



The opinion expressed by Taczanowski (Bull. Soc. Zool. de France, 

 1882, p. 44), that C. davidi may be identical with C. sibilus. Pall. 

 (Zoogr. Rosso- As. ii. p. 215), appears to be erroneous, for the latter 

 Bpecies was described with a frontal knob and with black lores, and 

 has been, with good reason, identified with C. olur. 



The Plate we give shows well the ditference in the shape of the 

 bill between our two Swans and an adult G. bewicki. 



38. EUNETTA FALCATA (Pall.). 



Eunetta falcata, David et Oust. Ois. Chine, p. 504 (18/7). 

 Querquedula falcata, Sclat. P.Z. S. 1880, p. 521. 

 a. (S . Possiette Bay, October 1879. 



A young bird, just beginning to assume the beautiful plumage of 

 the adult male. 



39. Aix GAT-ERicuLATA (Linn.). 



Aix gaJericidata, David et Oust. Ois. Chine, p. 501 (1877); 

 Sclat. P. Z. S. 1880, p. 513. 



a. $. Olga Bay, September 1879. 



An adult bird, interesting for the locality and the time of year. 



40. COSMONETTA HISTRIONICA (LiuU.). 



a. $. Olga Bay, September 1879. 



An adult bird, with a whitish patch below the eye extending to 

 the base of the bill. This species is not mentioned by David and 

 Oustalet in their work on the Birds of China. 



41. (Edemia deglandi, Bp. 



Oidemia deglandi, Bp. Rev. crit. Orn. Eur. Degl. p. 108 (1850); 

 Stejn. Bull. U.S. Nat. Mus. no. 29, p. 174 (1885). 



Oidemia velvetina, Cassin, Pr. Acad. Nat. Sc. Philad. v. p. 126 

 (Oct. 1850). 



Melanetta velvetina, Baird, Birds N. Amer. p. 805 (1858). 



(Edemia americana, Swinh. (nee Sw.), Ibis, 1863, p. 435 ; 

 P.Z.S. 1871, p. 419 (Yangtsze). 



(Edemia velvetina, Swinh. Ibis, 1875, p. 457 (Yangtsze); Sclat. 

 P.Z.S. 1880, p. 520. 



Oidemia fusca, David et Oust. Ois. Chine, p. 504 (1877, net 

 Linn.). 



a. S adult. Possiette Bay, October 1879. 



h, c. c? juv. Possiette Bay, October 1879. 



Bonaparte, and nearly contemporaneously Cassin, were perfectly 



39* 



