162 
ANATINiE, TADORNA. 
derably rearcuate, and becoming a little broader toward the 
end, wdiicb is rounded ; upper mandible with the dorsal line 
sloping to beyond the nostrils, then a little concave, at the 
end decurved, the ridge flattened at the base, and gradually 
narrowed, the unguis oblong, rather abruptly bent down- 
wards and inwards, the edges sinuous, the lamellae with 
their outer ends thin and not appearing beyond the margin. 
Mouth rather narrow ; anterior palate concave, with a me- 
dial prominent line, and on each side a series of trans- 
verse, thin, elevated lamellae, larger and more widely set 
toward the end. Digestive organs as in the character of 
the family. Trachea of nearly uniform width, a little en- 
larged at the lower part of the neck ; the lower larynx with 
two unequal, irregularly roundish, extremely thin bony sacs ; j 
bronchi of moderate size. Nostrils oblong, moderate. Eyes j 
rather small. Legs rather short ; tibia bare for a consi- 
derable space ; tarsus short, compressed, with very small ante- 
rior scutella ; hind toe elevated, with a lobiform membrane, 
outer toe nearly as long as the third ; all scutellate above ; 
interd,igital membranes full ; claws small, compressed, little 
arched, rather blunt. Feathers of the head and upper neck 
short and very soft ; scapulars large, oblong, rounded ; wings 
rather long, broad, pointed, the second quill longest, the 
first a little shorter ; inner secondaries elongated, oblong ; j 
tail moderate, nearly even, of fourteen weak rounded fea- 
thers. 
The males differ from the females only in being larger, , 
and in having the tints purer. They generally continue 
with the females, which deposit their numerous white or j 
cream-coloured eggs in a hole in the ground, or a crevice in j 
rocks. Their food consists of vegetable substances. 
243 . Tadorna Yulpanser. Burrow Shielduck. 
Male twenty-four inches long, with the bill rearcuate, and 
having a fleshy knob at the base above ; the wing with a 
blunt tubercle, the tail of fourteen feathers ; the bill bright 
red ; the feet flesh-coloured ; the head and upper neck black, 
glossed with green, the lower neck white ; the fore part of 
the body light red ; the rest of the plumage white, excepting 
a medial band on the breast and abdomen, a broad patch on 
