Dt Wi CHK. 
Anas Tadorna, Ivd. Orn. ii. p. 854. 56.—Ger. Orn. vit. 576.— Sepp. Vog. ii 
p- 192. t. 9G. 109. 
Shieldrake, Gen. Qe er 
248.—Lin. Tranf. iv. p. 
HIS bird has been fully treated of by moft authors. We have 
only to add here, that the ae is to be diftinguifhed from the 
other fex, by the addition of a labyrinth in the trachea at the loweft 
part, and is unlike that of any hitherto mentioned, confifting of two 
roundifh bladders, the one bigger than the other, of unequal furface, 
and moft delicate beny texture, being of fo tender a fabric, as fearcely 
to bear the preffure of the finger, without indenting in young fubjects 
or breaking in old ones. For the figure, fee the Lisnean Tranfatiions 
above quoted. é 
5) 
Be st.—ld. Sup. p. 275.—Lewin’s Birds, vii. pl. 
17. pl. xv. f. 8 Q. 
Anas clypeata, ind. Orn. ti. p. 856. 60.—Ger. Orn, v. t. $72. 573.—Sepp. Vog. 
t. 130. 131. 
Shoveler, Gen. Syn. vi. p. 509. SS ery s Birds, 7. N° 252.—Lin. Tranf- iv. 
p- 109. pl. xiii. f. 4. 5. 
E have nothing to add concerning this bird, further than to no- 
tice the labyrinth in the trachea of the male, which confifts of 
a roundith bony arch, but very fmall in proportion to the bird, as 
may be feen in the plate in the Limnean Tran/attions above referred 
fo. 
Anas ftrepera, Ind. Orn. ii. p. 859. 69.—Ger. Orn. v. t. 574. 575+ 
Gadwal, Gen, Syn. vi. p. 515.—Linn. Tran/. iv. p. 111. t. 13. f. 7. 8. 
"T HE windpipe of the male has a bony bladder and arch, fomewhat 
like that.of the Pixtail Duck; but the globular part not quite fo 
large: we may obferve too, that it adheres to the fide of the arch, 
quite to the bottom, whereas in the Pintai/, it is attached to the fide of 
the arch by.a {mall portion only. 
Supp, II, La 
353 
20% 
SHIELDRAKE. 
DescRIPTION. 
2. 
SHOVELER 
D. 
DEscRIPTION- 
22, 
GADWAL 
D. 
DsscrirpTione 
