XVIII. Chimney swallow 429 _Hirundo rustica_ 343 Martin 430 _Hirundo urbica_ 344 Sand martin _ib._ _Hirundo riparia_ _ib._ XIX. European goatsucker 437 _Caprimulgus Europeus_ 346 _Water Fowl._ _CLOVEN-FOOTED WATER FOWL._ Great tern No. 448 _Sterna hirundo._ Kamtschatkan P. 525 A. Black-headed gull No. 455 _Larus ridibundus_ 225 Kittiwake gull No. 456 _Larus rissa_ 224 Ivory gull No. 457 Arctic gull No. 459 Tarrock P. 533 _Larus tridactylus_ 224 D. Red-legged No. _ib_. E. Fulmar petrel No. 464 _Procellaria glacialis_ 213 Stormy petrel No. _Procellaria pelagica_ 212 _ib._ Kurile petrel P. 536 A. Blue petrel.[59] Preface. Goosander merganser No. 465 _Mergus merganser_ 208 Smew No. 468 _Mergus albellus_ 209 Whistling swan No. 469 _Anas Cygnus ferus_ 194 A. Great goose P. 570 Chinese goose P. 571 _Anas cygnoides_ _ib._ B. Snow goose No. 477 Brent goose No. 478 _Anas bernicla_ 198 Eider duck No. 480 _Anas mollissima_ _ib._ Black duck No. 483 _Anas spectabilis_ 195 Velvet duck No. 481 _Anas fusca_ 196 Shoveler No. 485 _Anas clypeata_ 200 Golden eye No. 486 _Anas clangula_ 201 Harlequin No. 490 _Anas histrionica_ 204 Mallard No. 494 _Anas boschas_ 205 ** Western No. 497 Pintail No. 500 _Anas acuta_ 202 ** Longtailed No. 501 _Anas glacialis_ 203