1. cYGxrs. 31 



Cv"-nus ferua, G. R. Gr. [nee Leach) Cat. Hodr/s. Coll. B. M. p. 144 

 'fNepal) (1840) ; id. op. cit. 2nd ed. p. 76 (1863) ; Brooks, 



J. A. S. B. 1872, p. 64 ; Blanf. Sir. Feath. vii. p. 99 (1878) ; 



Hume, ibid. p. 464 ( = bewickii) (1879). 

 Cygnus musicus, Kjaerb. {nee Bechst.) Oni. Dan. pi. x1it._(18o1). 

 Cygnus sp., Altum, Naumnnnia, 1854, pp. 14o-149, Taf. i. & ii^ 

 CVgnus americanus, Hartl. (nee Sharp!.) Naiimannia, 1854, p. 327. 

 Cy"-nusaltumi, Baedeker, fde Bp. Compt. Rend, xliii. p. 648 (1856) ; 



Severtz. Turkest. Jevofn. p. 70(1873); id.J.f. O. 1875, p. 184, 



n. 358; Dress. Ibis, 1876, p. 416; Hume, Str. Feath. \n. p. 105 



(1878) ; Secertz. Zeitschr. ges. Om. 1887, p. 22. 

 Holor minor, Olphe-Gall. Contr. Faun. Om. Fur. Occ. fasc. v. 



p. 15 (1885). 

 CvL'-uus davidi, Gii/l. ^- Salvad. (nee Swinh.) P. Z. S. 1887, p. 589, 



"pi. lii. f. 1 (Possiette Bay) ; iid. Mem. R. Ac. Sc. Tor. (2) xxxix. 



p. 117 (1888). 



AchiU. Similar to C. musicus, but smaller; tail-feathers nor- 

 mally 20 ; lores and hasal portion of the beak deep yellow, but this 

 colour not extending below the nostrils, remainder of the bill blaok, 

 the black reaching on the edges to the gape and sometimes extending 

 along the culmen : legs and feet dull black ; irides hazel. Total 

 length 3 feet 10 inches to 4 feet 2 inches, wing about 21 inches ; 

 culmen 3-8, tarsus 4*8. 



Young in first ivinter. Greyish brown. 



Youmi in second winter. Wiute, the head and breast strongly 

 marked "with rusty ; base of the beak lemon-yellow. 



Hah. Arctic Siberia, whence it migrates to the Caspian, South 

 Siberia, Mongolia, China, and Japan; occasionally wanders to 

 Central and Western Europe, more frequently visits Great Britain. 

 It is not known to occur in Iceland. 



a. Ad. sk. Gt. Britain. Yarrell Coll. _ (Type 



of the species.) 

 h. Ad. St. Gt. Britain. ^ ^ , 



c. Ad. St. Gt. Britain. A. D. Bartlett, Esq. 



[C.]. 



d. Ad. [head and Whittlesea. Salvin-Godman Coll. 



e. 2 ad. [head]. Strangford Lough, Belfast. J. E. Harting, Esq. 



f. Ad. [head and Tetchora. Seehohm Coll. 



g. Ad. sk. Ningpo, China, Dec. (R. Swin- Seehohm Coll. 



hoe). 

 h. Ad. St. Amoy, China. Buvchased. 



i. S juv. sk. Possiette Bay (Voy. of II.It.M. Prof. Giglioli [P.].* 



Ship ' Vettor Pisani'). 

 k. Ad. sk. Yokohama, Japan (H. Seehohm Coll. 



Fri/er). 



Cggnus davidi, Gigl. & Salvad. P. Z. S. 18S7, p. 539, pi. lii. f. 1. 



