SYNOPSIS. xxxiii. 



P. major, Faber. 



P. Anglorum, Temm. - v. 2, p. 227 



6J*. 83. THALASSIDROMA. Bill shorter than the 

 head, slender, much compressed at the point; lower man- 

 dible pointed and bent at the tip, following the curvature of 

 the upper: nostrils extending half the length of the bill, con- 

 tained in one tube, showing two distinct orifices in front: 

 tarsi very long, slender: tail square or slightly forked. 



T. Bulwerii, Jardine and Selbv. 



T. Leachii, Vig. v. 2, p. 230 



T. Wilsoni, Bonap. 



T. pelagica, Vig. v. 2, p. 232 



Gen. 84. ANSER. Bill as long as, or shorter than the 

 head, conical, elevated at the base, and covered with a cere 

 or skin; upper mandible deflected at the tip; lower one flat, 

 straight, narrower -and shorter: nostrils lateral, placed to- 

 wards the middle of the bill: legs in the equilibrium; tarsi 

 slightly elongated; hind toe free: wings tuberculated, or 

 spurred. 



A. ferus, Steph. - v. 2, p. .236-238 



A. Segetum, Steph. v. 2, p. 245 

 A. brachyrhynchus, Bail/. 



A. Albifrons, Steph. \. 2, p. 249 



A. Leucopsis, Becks f. - v. 2, p. 251 



A. Bernicla, Temm. v. 2, p. 254 



A. ruficollis, Pall. v. 2, p. 256 



* A. Canadensis, Flem. - v. 2, p. 258 



* A. ^Egyptiacus, Meyer. v. 2, p. 262 

 A. Gambensis, Flem. - v. 2, p. 264 



* A. Guineensis, Briss. - v. 2, p. 266 



Gen. 85. CYGNUS. Bill of equal breadth throughout, 

 higher than broad at the base, depressed at the point; upper 

 mandible deflected at the tip; lower one flat: nostrils ob- 

 long, lateral, medial: neck very long: legs out of the equili- 

 brium; tarsi short; hind toe small and free. 



C. ferus, Ray. - v. 2, p. 268 



C. Bewickii, Yarrell. - v. 2, p. 273 



VOL i. e 



