SWANS, GEESE, AND DUCKS. 
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First Division. 
Snowy sheldrakes. Tadornae niveae. 
1. Northern sheldrake. T. nivea, Brehm. 
Second Division. 
Variegated sheldrakes. Tadornae variae. 
1. Egyptian sheldrake. T. egyptiea, Boje. 
Third Division. 
Maritime sheldrakes. Tadornae maritime. 
1. Gibbous sheldrake. T. gibbera, Brehm. 
2. Littoral sheldrake. T. littoralis, Brehm. 
3. Sea sheldrake. T. maritima, Brehm. 
Fourth Division. 
Red sheldrakes. Tadornae rubrae. 
1. Red sheldrake. T. rubra, Brehm. 
Genus V. 
Duck. Anas, Linnams, Frisson, Leach, Boje, Brehm. 
First Division. 
Stock ducks. Anates rectricibus medius recurvis. 
1 . Great stock duck. An. archiboschas, Brehm. 
2. True stock duck. An. boschas, Linnaeus. 
3. Icelandic stock duck. An. subboschas, Brehm. 
4. Greenland stock duck. An. conboschas, Brehm. 
Second Division. 
Pintail ducks. Anates cauda cuneata. 
1. Small billed pintail duck. A. acuta, Linnaeus. 
2. Broad billed pintail duck. A. longicauda, Brehm. 
3. American pintail duck. A. caudata, Brehm. 
Third Division. 
Gadwalls. Anates streperae. 
1. Great billed gad wall. A. strepera, Linnaeus. 
2. Small billed gadwall. A. einerea, Gmelin. 
Fourth Division. 
Wigeons, or whistling ducks. Anates fistulantes. 
1. Great billed wigeon. A. kagolka, Gmelin. 
2. Small billed wigeon. A. tistularis, Gesner. 
3. Short billed wigeon, A. penclope, Linnaeus. 
Genus VI. 
Shoveller, or shoveller duck. Clypeata, Boje , Brehm. 
1. Long billed shoveller. Cl. niacrorhynchos, Brehm. 
2. Broad billed shoveller. Cl. platyrhynchos, Brehm. 
