BIRDS OF AMERICA. 
Genus V.— FULIGULA. SEA-DUCK. 
Bill about the length of the head or shorter, higher than broad at the base, 
depressed toward the end, the margins parallel, slightly dilated towards the 
end, which is rounded, the frontal angles rather pointed ; upper mandible 
with the dorsal line generally declinate, but various at the base, being often 
prominent, the ridge broad at the base, narrowed at the middle, enlarged and 
convex at the end, the sides nearly erect at the base, gradually more decli- 
nate, the edges soft and internally lamellate, the unguis oblong and decurved: 
lower mandible flattened, being but slightly convex, with the angle very 
long and rather narrow, the dorsal line very short and straight, the edges 
internally lamellate, the unguis flat, obovato-elliptical. Nostrils sub-medial, 
Vol. VII.— 2 
