John Hogg, Esq., on tke Classification of Birds. 67 



ones of importance ; namely^ in the absence of the basal pro- 

 tuberance of their bill, and in the lengthened tube of their 

 windpipe, which enters with a fold into a cavity, within the 

 keel of the sternum. And in the distribution of the AmeridcB 

 I have arranged the genera thus : — 1. Bemicla, beginning 

 with {B. Brenta) the brent bernicle, which affords considera- 

 ble resemblance to the common coot, the last of the Gralla- 

 torial order, both in shape, colour, and plumage. 2. Anser ; 

 3. Chen; 4. Cygnus; 5. Olor; and then I have placed the spur- 

 winged goose (Plectroyterus Gambensis), because, in that bird, 

 the single enlargement at the end of the trachea first presents 

 itself, and is perforated with many holes, thereby approaching 

 to the AnatidcB. And, lastly, I have added the Chenalopex 

 Egi/pHaca, or Egyptian goose ; for that species next offers the 

 tracheal enlargement, which is larger and more perfect than 

 the preceding, and thus shews its closer affinity to the family 

 of ducks. 



My restricted family 2. Anatidce, answers to Cuvier's second 

 divison of ducks, which is thus ably defined by that author :-^ 

 '• Les Canards de la deuxieme division, dont le pouce n'est 

 point horde d'une membrane, ont la tete plus mince, les pieds 

 moins larges, le cou plus long, le bee plus egal, le corps moins 

 ^pais ; ils marchent mieux ; recherchent les plantes aquatiques 

 et leurs graines, autant que les poissons et autres animaux. II 

 parait que les renflemens de leurs trachees sont de substance 

 homogene, osseuse et cartilagineuse." {Begne Animal^ p. 536, 

 tome i., edit. 1817.) 



^^Family 3, Fuligulidw^ constitutes the first division of 

 Cuviers arrangement of the ducks {Les Canards), and is cha- 

 racterized by him as follows : — " Les especes de la premiere 

 division, ou celles dont le pouce est horde d'une membrane, 

 ont la tete plus grosse, le cou plus court, les pieds plus en 

 arriere, les ailes plus petites, la queue plus roide, les tarses 

 plus comprimes, les doigts plus longs, les palmures plus 

 entieres. EUes marchent plus mal, vivent plus exclusivement 

 de poissons, et d'insectes, et plongent plus solvent.'* {Beg. 

 An., p. 532, tome i.) 



Notwithstanding that the tracheal tube and labyrinth of 

 the golden Eye (Clangula), approximating to those of the 



