33 



MERGULUS. SEA-DOVE, 



Generic Character. 



nostrum mediocre, basi plu- 

 mis tomentosis instructum, 

 crassiusculum, supra con- 

 vexum, versus apicem 

 emarginatum, curvatum. 



Nares rotundae plumis semi- 

 tectae. 



Pedes breves, tridactyli, pal- 



mati. 

 Alee breves. 



Beak medial, its base fur- - 

 nished with downy fea- 

 thers, somewhat thickened, 

 above convex, emarginate 

 towards the tip, curved. 



Nostrils rounded, half co- 

 vered with feathers. 



Leg's short, three-toed, wel>- 

 bed. 



Wings short. 



MERGULUS. Ray, Vieil., Leach. 



ALCA. Linn., Gmel., Lath. 



URIA. Briss., Brunn., Temm., Sabine. 



ERE is but one species known belonging to 

 this genus, which is readily distinguished from the 

 other Alcadse by its short, thick, and convex beak, 

 which is feathered from the corners of the mouth 

 half-way forwards towards the point. 



V. XIII. p. I. 



3 



