in ornithology, a genus of birds, of the order of the anseres, distinguished by having the beak of a cylindrical figure, and hooked at the extremity, and its denticulations of a subulated form. There are six species of this genus, viz. 1. The cucullatus, or crested diver of Cateby, has a globular crest, white on each side; and the body is brown above, and white below. It is a native of America. See Pl. 110. 2. The meranger, has a longitudinal crest, somewhat erect, a white breast, and a black head. It is a native of Europe. 3. The ferator, has a hanging crest, a variegated brownish breast, and a white collar. It is a bird of Europe. 4. The caster has a crested ash-coloured head, a white throat, and a black bill and legs. It inhabits the south of Europe. 5. The albellus, has a hanging crest, a black head and back, and white below. It is a bird of Europe. 6. The minutus, has a smooth gray head, with a black spot near the eyes. It is a native of Europe.