THE CLASSIFICATION OF BIRDS. 305 
Order XIV. PYGOPODIFORMES. 
Suborder I. PYGOPODES. 
Family I. Corympip2. 
Colymbus, 4. 
Family II. Poprcrprp2. 
Podiceps, 31. Podilymbus, 5. 
Suborder II. ALCAN. 
Family I. Aucipz. 
Alca, 2. Fratercula, 8. 
Family I. Stworuyncuip®. 
Cerorhinca, 2. Simorhynchus, 9. 
Family III. Urtapz. 
Brachyrhamphus, 7. Uria,8. Alle, 1. 
Order XV. LAMELLIROSTRES. 
Suborder I. PHOSNICOPTERL. 
Family I. PHa:nrcopTERip&. 
Phenicopterus, 8. 
Suborder I]. ANSERES. 
Family I. PLECTROPTERID®. 
Anseranas, 1. Plectropterus,2. — Sarkidiornis, 2. 
Chenalopex, 3. 
Family II. ANsERID&. 
Cereopsis, 1. Anser, 14.  Branta,18. Nettapus, 4. 
Family II. Cyenipm. 
Cygnus, 11. 
Family IV. Anatip2. 
Dendrocygna, 10, Tadorna, 3. Casarca, 5. Aix, 2. 
Mareca,4. Dafila,6.  Anas,18.  Querquedula, 18. 
Chaulelasmus, 2. Spatula, 5. | Malacorhynchus, 1. 
Catrina, 1. 
Family V. FuriguLipa. 
Fuligula, 1. Fulix, 5. - Aythya,7.  Bucephala, 5. 
Harelda, 1. Hymenolaimus, 1. Camptolaimus, 2. 
Stelleria, 1. Somateria, 4. Oidemia, 6. 
Family VI. ErismMaturip2. 
Bizura, 1. Thalassornis, 1. Erismatura, 6. Neso- 
netta, 1. 
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