1 1 8 Dr. Latham** Fjfay en the Trachea or iVindpipes. of Birds* 



The Shieldrake is one of the moil beautiful of the Duck genus, 

 and the lower part of the trachea in the male is of a fingular con- 

 ftruction, being not itri£lly fimilar to any of the foregoing; it is 

 pretty long, and nearly of equal dimenfions, except towards the 

 bottom part, where it leflens fomewhat : juft above the divarication* 

 are two bony kind of roundifh bladders, one larger than the other, 

 of unequal furface, and mod delicate texture, being of fo tender a fa- 

 bric as fcarcely to bear the preffure of the finger, without indenting 

 in young fubjects, or breaking in older ones; and, when dry, putting 

 on more or lefs of a fhrivelled appearance, though in a recent ftate 

 they appear to be nearly tranfparent. Though fo greatly different 

 from the fame part in the Mallard, as before defcribed, yet its voice 

 is faid not to be unlike that bird. 



WE now proceed to fome birds, in which not only an enlarge- 

 ment at the lower end of the trachea is obfcrvable, but likewife the 

 trachea itfelf is either dilated, or otherwise enlarged, and fometimes 

 in more places than one. 



XXIII. ANAS CLANGULA— The Golden Eye Duck. 



Tab, xv. Fig, i, 2. 

 A. nigro alboque varia,capite tumido violaceo, finu oris macula alba. 

 Anas Clangula, Linn. Syft. Nat. i. p. 20r.— Ind. Orn. ii. p. 867.— 



Ran Syn. Av. p. 142. A. 8.— jdrif. Orn. vi. p. ll6< t. 17. f. 2. 



—Frtfch. t. 183, 184. 



Le Garrot, Buf, Of. ix. p. 222.— PL Enl 802. 



Die Quackerente, Befch. der Bert. Nat. Fr. iv. p. 599. t. xvii. f. 1, 2. 



Golden Eye, Gen. Syn. vi. p. S^.—Br. Zoo!. No. i~§,-WiU. Orn. 

 p. 368. t. 73 . 



In 



