John Hogg, Esq., on the Classification of Birds. 55 



' Genua. Phccnicopterus. 

 Tribe IV. Spathulirostres. 

 Family. Plataleidae. 



Genus. Platalea. 

 Tribe Y, Longirostres. 

 Family 1. Tantalidae. 

 Genera. Tantalus, Ibis. 

 Family 2. Recurvirostridae. 

 Genus. Reeurvirostra 

 Family 3. NumeniadaB. 

 Genera. Terehia, Limosa, 

 Numenius. 

 Family 4. Scolopacidae. 

 Genera. Totanus, Machetes, Rus 

 ticola, Scolopax, Macrorham- 

 phus, Eroliay Tringa. 

 Family 5. Phalaropodidae. 

 Genera. Phalaropus, Lobipes. 

 Family 6. Calidridae. 

 Genera. Himantopus, Calidris. 

 Tribe VI. Diversirostres. 

 Subtribe 3. Macrodactyli. 

 Family. Rallidae. 

 Genera. Rallus, Crex, Zapornia. 

 Tribe VII. Frontiscutirostres. 



Family Fulicidae. 



Genera. Gallinula, Porphyrio, 



Fulica. 



Order VI. Natatores. 



Tribe I. Lamellirostres. 

 Subtribe 1. Simplicipollices. 

 Family 1. Anseridae. 

 Genera. Bemicla, Anser, Chen., 

 Cygnus, Olor, Plectropterus, 

 Chenalopex. 

 Family 2. Anatidae. 

 Genera. Tadorna, Caiinna, Rhyn- 

 chaspis, Chauliodus, Dafila, 

 Anas, Mareca. 

 Subtribe 2. Membranipollices. 



Family 3. Fuligulidae. 



Genera. Clangula, Undina, 



Harelda, Fuligula, CEdemia, 



Soraateria. 



Tribe II. Serrirostres. 



Family 1. Mergidae. 



Genera. Mergus, Merganser. 



Subtribe 3. Totipalraas. 



Family 2. Fregatidae. 



Genus Fregata. 



Family 3. Carbonidae. 



Genera. Carbo, Sula. 



Trihe III, Sacculirostres. 



Family Pelecanidae. 



Gf^nus Pelecanus. 



Tribe IV. Tubinarirostres. 



Subtribe 4. Longipennes. 



Family. Procellariadae. 



Genera. Diomedea, Procellaria, 



Puffinus, Thalassidroma. 



Tribe V. Medionarirostres. 



Family. Laridae. 



Genera. Cataracta, Lestrie, Larus, 



Rissa, Xema. 



Tribe VI. Subulirostres. 



Family. Sternidae. 



Genera. Anous, Viral va, Pon- 



tochelidon, Sterna. 



Tribe VII. Cuspidirostres. 



Subtribe 5. Brevipennes. 



Family 1. Podicipidae. 



Genus. Podiceps. 



Family 2. Coljmbidae. 



Genera. Colymbus, Uria. 



Tribe VIII. Sulcirostres. 



Family 1. Mormonidas. 



Genera. Mergulus, Mormon, 



Utamania. 



Subtribe 6. Imperfectipennes. 



Family 2. Alcidae. 



Genus. Alca. 



It now becomes me to explain, as briefly and as clearly as 

 I can, the subclasses, certain of the tribes, and other groups, 

 adopted in the preceding classification. 



Subclass I. Aves Constrictipedes,— Birds whose feet are 

 constrictile, or adapted to grasping. The birds belonging to 

 this subclass make, in general, compact and well built nests, 

 wherein they bring up their very weak, blind, and mostly 

 naked, young, which they feed with care, by bringing food 



