388 Mr. YaAnnELL on the Trachee of Birds. 
the surface. In its stomach, intestines, and cecal appendages, 
the Golden Eye is also intermediate, the latter being only 
two inches in length. In the Goosander these appendages are 
three inches ; but the size of the bird being considered, reduces 
them on a comparative estimate to less than two: in the Red- 
breasted Merganser they are but one inch; the Smew is without 
any. In the form of its trachea, the Golden Eye more closely 
resembles the Mergansers than that of any other Duck, by the 
enlargement in the tube, and in the shape of the labyrinth, as a 
reference to Dr. Latham’s representations will show. Thus the 
whole of the numerous species of the Anatide appear to descend 
to the more perfect water-birds by erections, but with well- 
marked divisions throughout. | 
How far I am correct in an arrangement not strictly in ac- 
cordance with the published systems of ornithologists, 1 must 
leave to better judges to determine; assuming, however, that 
an arrangement will be the more natural according to the pro- 
portion in which it combines ascertained habits, external cha- 
racters, and anatomical structure *.- 
~ ihe following extract is made from the 68th number of Mons. Temminck's 
Planches Coloriées, recently received in this country, Article 406. 
HYDROBATES LOBATUS, Temm. 
* Nous avons cru nécessaire de separer des canards proprement dits, et de réunir 
sous la dénomination mentionnée, toutes ces espéces à doigt postérieur garni d'un 
rudiment de membrane, vu que le squelette de ces oiseaux nous offre des différences 
marquées et constantes; que leur manière de vivre et le choix des alimens ne sont pas 
les mémes que chez les canards à doigt postérieur lisse, et que des caractéres faciles à 
saisir fournissent de trés-bons moyens pour établir la différence générique entre ces 
deux groupes. Nous renvoyons tous les détails sur l'organisation et les mœurs à l'ar- 
ticle contenant les généralités et l'Index du genre Hydrobate." 
The description of the generic characters and other peculiarities has not yet ap- 
peared. 
EXPLA- 
