FULIGTJLINiE. FULIGULA. 
187 
Long-tailed Duck. Sharp-tailed Duck. Calloo. 
| Anas glacialis and hyemalis, Linn. Syst. Nat. i. 202. — 
Anas glacialis, Lath. Ind. Ornith. ii. 864. — Anas glacialis, 
| Temm. Man. d’Ornith. ii. 864. — Crymonessa glacialis, Long- 
tailed Ice-Duck, MacGillivray, Brit. Birds, v. 
GENUS CXXXIII. FULIGULA. SCAUP-DUCK. 
! The Scaup-Ducks have the body very large, short, full, 
and depressed ; the neck moderate or rather short ; the head 
rather large, oblong, compressed, and rounded above. Bill 
nearly as long as the head, about the same height and 
breadth at the base, becoming depressed, and enlarging in 
breadth to the end, which is very broad and semicircular ; 
upper mandible with the basal lateral sinuses very short 
and wide, the upper sinus short, the frontal angles obtuse 
and little extended, the dorsal line gently declinate for half 
its length, then nearly direct to the unguis, which is small, 
obovato-oblong, flattened, and decurved, the ridge broad, 
and flat at the base, gradually narrowed, the sides gra- 
dually more spreading and convex toward the end, the edges 
soft, marginate, concealing the ends of the numerous little 
elevated lamellae ; lower mandible with the intercrural space 
long and rather wide, the outer lamellae small, the unguis 
obovate, rather small, and nearly flat. Mouth of moderate 
width ; anterior palate broadly concave, with a median pro- 
minent line, and numerous, slender, little elevated lamellae ; 
tongue fleshy, with a deep median groove, papillate at the 
base, lamelloso- filamentous on the margins, with the tip thin 
and somewhat semicircular ; oesophagus rather wide ; sto- 
mach a very muscular gizzard, of a transversely elliptical 
form, with longitudinally rugous epithelium, and somewhat 
concave circular grinding plates ; intestine very long and 
wide ; coeca long, of moderate width ; rectum very short. 
Trachea with a very large bony and membranous tympanum, 
of an irregular form, with a semicircular carina on one side. 
Nostrils small. Eyes small. Ears very small. Legs very 
short, placed rather far behind ; tarsus compressed, with 
small anterior scutella ; hind toe very slender, with a broad 
membrane ; outer toes about equal, and double the length 
of the tarsus ; interdigital membranes emarginate ; claws 
