155 



Fuliffula ferina Steph. Sh. Zool. 1 . 193. 



Anas ferina Linn. Syst. 1. 203. 



Gmel. Syst. 1. 530. 



Lath Ind. Orn. 2. 862. 

 Anas ruf'a Gmel. Syst. 515. 



Lath. Ind. Orn. 2. 863. 



Ay thy a ferina Boie in Brehm. Hand, der Nat. alter, Vo. 



Beut. 920. 



A'yroca ferina Flem. Brit. An. 121. 



Pochard or Red-headed Pochard Penn. Arct. Zoo?. 2. 491. 



Millouin Buff. Ois. 216. 



Lc canard a cou roux Veill. En. JTeth. Orn. 1. 132. 



Le miUouin Veill. En. Meth. Orn. 1. 136. 



Trachea Linn. Trans, vol. 4, tab. XA.fig. 3 — 4. 



Common on the European and British coasts during winter. We have also received it from India. 

 The sea appears to be its true habitation, but it is occasionally found frequenting fresh water, par- 

 ticularly in the breeding season, when it makes its nest on the borders of rivers, laying twelve eggs 

 of a greenish white colour, and generally within the arctic circle. 



The trachea of this and the two following species are so very similar that it can be only by a 

 comparative description that we shall be able to make their distinctions understood. All have the 

 tube of the trachea largest a little below the glottis ; it is slightly contracted about one-third of its 

 length from that part, again expanded, and again contracted immediately above the inferior larynx. 

 The bulb in all is flattened, and mostly membrinaceous, with merely just sufficient bone to stretch 

 the membranes or tympanum. Two of the species, F. cristata and F. ferina, have a second 

 swelling or small bulb entirely osseous on the right side, composed of enlarged rings of the lower 

 part of the tube, through which the bronchia of that side passes ; this bulb and the whole of the 

 tracheal apparatus is smaller, as well as the tube shorter, in F. cristata than in F. ferina. 



The trachea of F. marilla may be distinguished from the preceding by the inferior larynx being 

 destitute of the bulb on the right side ; in other respects it is similar. 



FULIGULA AMERICANA. 



Fn. — Similis precedenti, sed rostrum ungue latiore. 



AMERICAN POCHARD. 

 Pochard like the preceding, but the bill with the nail broader. 



IN. 



Length 19| Breadth of nail 



Bill If Tarsi l| 



