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Genus Oidemia, Flem. 
* Oid. perspicillata. America . Or Oid. fusca. Britain . 
Oid. (Hydrobates, Temm.) lobatus. Australia . 
Genus Fuligula, Ray. 
* Ful. Marila. Britain. 
Genus Clangula, Flem. 
* Clang, vulgaris. Britain. 
Clang. ( Oxyura , Gould.) Australis. Australia. 
Genus Harelda, Ray. 
* Har. glacialis. Britain. 
Subfam. MERGANINME. 
Genus Anserella. 
Anser. Madagascariensis. Madagascar. 
Genus Mergus, Linn. 
* Mer. (Mergellus, Selby.) albellus. Britain. 
* Mer. Merganser. Britain. 
Fam. colymbid.l:. 
Genus Podiceps. Lath. 
* Pod. cristatus. Britain. 
Pod. (Poliocephalus, Selby) (1) Nestor. Australia. 
Genus Podoa, III. 
Pod. Surinamensis. America. 
Genus Colymbus, Linn. 
* Col. glacialis. Britain. 
Fam. ALCADAS. 
Genus Uria, Brisson. 
* Ur. Troile. Britain. 
Genus Alca, Linn. 
* Al. impennis. Arctic Regions. 
Genus Mormon, III. 
* Mor. arctica. Britain. 
(1) Mr. Swainson gives to this group a generic value, but we doubt 
whether it is even entitled to a sulgeneric rank. 
