SEMIPALMATED BERNICLE. 65 



second Supplement. " Size nearly of a Wild Goose : 

 beak brown, the cere at the base of it passing on each 

 side to the eye : the head, neck, and thighs brownish- 

 black : round the lower part of the neck a collar of 

 white : the rump and under parts white : legs red : 

 toes only webbed half way from the base : the external 

 plumage does not seem to have any great peculiarity, 

 but on dissection, the situation of the trachea offers a 

 great singularity, for after passing on the fore part 

 of the neck in the usual way, it forms several circum- 

 volutions on the outside of the muscles of the breast, 

 under the skin, before it enters the cavity." In- 

 habits New Holland : found in flocks, especially near 

 Hawksbury River : its note is said to be agreeable, 

 and the bird to perch on trees in the manner of the 

 Whistling Duck. 



STIRPS II. 



Rostrum basi vix altius quam latum, cera semitectum; tarsi eion- 



gati ; trachea ? 



Beak scarcely higher than broad at its base, half-covered with a 



cere ; tarsi elongated ; trachea 



THERE is but one genus known belonging to this 

 stirps, which is at once distinguished from the rest of 

 the Anatida?, by the cere with which the basal half 

 of the beak is furnished. 



V. XII. P. II. 



