Dr. LATHAM 5 / Effay on the Trachea or Windpipes bf Birds, Ill 



WE pafs now to the Merganfer or Goofander tribe, in every fpecics 

 of which frequenting this kingdom fomewhat occurs worthy of 

 notice. 



XXV. MERGUS SERRATOR-— Red-breasted Merganser, 



Tab. xvi. Fig. I, 2. 



M. crifta dependente, pe&ore rufefcente varicgato, collari albo. 

 Mergus Serrator, Linn. Syft. Nat. i. p. 2oS.—Ind. Orn. ii. p. 829. 



RaiiSyn. Av. p. 135. A. 4.— Br'if. Orn. vi. p. 237. pL 23. 

 Le Harle huppe, Buf Oif. viii. p. 273. — P/. Ltd. 207. 

 Der Haubentaucher, Scbr. der Berl. Nat. Fr. iii. p. 374. t. 7. f. 5. 

 Meerachen, Beckfl. Fog. Deutfch. ii. p. 732, Note *. 

 Red-breafted Merganfer, Gen. Syn. vi. p» 423. — £;•• Zoo/. No. 261. 



t. 93. — Will. Orn. p. 336. t. 64. — Edw. t. 95. 



The whole of the Merganfer genus* on outward infpe&ion, feems 

 greatly allied to that of the Duck, and to differ chiefly in the bill, 

 which, inftead of being nattifh, thick, and rounded at the end, is 

 long and narrow, having the edges furniihed with numerous fiiarp 

 procefTes like the teeth of a faw, which has given rife among fportf- 

 men to the name of Saw-billed Ducks or Dhers. In the Duck genus 

 the trachea will be found to be more or lefs compofed of griftly rings, 

 approaching indeed in many very nearly to bone, and connected to 

 each other by means of cartilaginous membranes, except in the 

 labyrinthic parts, which are truly bone; but in the Merganfer tribe 

 the whole feems to be compofed of little elfe than bone, and, in 

 fpecies now before us, the bony rings or plaits fold over one another 

 in a remarkable manner, as may be feen in the figure. It is in this 

 too, as in the genus of Duck, that the fmgularities oblerved in the 

 trachea are only in the male fex. But, to the point 



Vol. IV. R The 



