204 MR. H. SAUNDERS ON THE LARINjE. [Feb. 5, 



Gavia roseiventris, Gould, P. Z. S. 1859, p. 97 (Falkland 

 Islands). 



Larus roseiventris, Sclater, P. Z. S. 1860, p. 391 ; Abbott, Ibis, 

 1861, p. 166 (Falkland Islands). 



Gavia glaucotis, Blasius, J. f. Orn. 1865, p. 374. 



Chroicocephulus glaucodes, G. R. Gray, Hand-1. Birds, iii. p. 1 14. 



Hab. Falkland Islands, Straits of Magellan, Western Patagonia, 

 and coast of Chili. I cannot find any evidence of its occurrence in 

 Eastern Patagonia ; and certainly at the Chuput river, lat. 43° S., its 

 place is taken by L. maculipennis. 



Specimens from the Falklands seem to be smaller on the average 

 than Chilian examples ; but there is no other point of difference. 



42. Larus cirrhocephalus, Vieill. 



Larus cirrhocephalus, Vieillot, in 2nd ed. Nouv. Diet. Hist. Nat. 

 t. xxi. p. 502 (1818), Brazil ; id. Gal. des Ois. ii. p. 223, pi. 289 

 (1834); Schlegel, M. P.-Bas, Lari, p. 37 (1863); Scl. & Salv. P. Z. S. 

 1871, p. 578 ; iid. Norn. Av. Neotrop. p. 148 (1873) ; Saunders, P. 

 Z. S. 1874, p. 292; Durnford, Ibis, 1877, p. 201. 



Larus poliocephalus, Temm. M. d'Orn. ii. p. 780 (1820); Max. 

 v. Wied, Beitr. iv. p. 854 ; vide Salv. Ibis 1874, p. 320. 



Chroicocephalus cirrhocephalus, Bruch, J. f. Orn. 1853, p. 106. 



Cirrhocephalus plumbiceps, Bruch, J. f. Orn. 1855, p. 288. 



"Larus maculipennis, Licht," Burm. Syst. Ueb. Th. Brasil. iii. p. 

 448 (1856), nee Licht. (Brazil coast, especially the small islauds); 

 id. La Plata-Reise, ii. p. 518. no. 256 (1861) (R. Parana). 



Gavia eirrhocephala (part.), Blasius, J. f. Orn. 1865, p. 376. 



Hab. Coast of Brazil, bays and lakes, down to Rio de la Plata, 

 and up the Parana. Mr. Durnford did not observe it south of Buenos 

 Ayres. On the Pacific coast it occurs near Callao, one specimen 

 from Chorillos being in my own collection, and another, obtained by 

 M. Grec of Lima at the Chinchas Islands in 1855, being in the 

 Bordeaux Museum. 



43. Larus phjeocephalus, Sw. 



Larus poiocephalus (sic), Swains. B. \V. Afr. ii. p. 245, pi. 29 

 (1837) : ad. ex. believed to be the type, in Cambr. Mus. from Sene- 

 gambia, examined, H. S. 



Xema phceocephala, Strickl. & Scl. B. of Damar., Contrib. Orn. 

 1852, p. 160. 



Gavia eirrhocephala (part.), Blasius, J. f. Orn. 1865, p. 376. 



Larus poiocephalus, Swains., Layard, B. S. Afr. p. 368 (1867), 

 partim ; Barboza du Bocage, J. f. Orn. 1876, p. 293 (Cunene, Ben- 

 guela). 



Larus phceocephalus, Hartl. Orn. W.-Afr. p. 252 (1857); id. J. f. 

 Orn. 1861, p. 273 ; Finsch & Hartl. Vog. OstAfr. p. 825 (1870) ; 

 Saunders, P. Z. S. 1874, p. 292. 



Cirrhocephalus poiocephalus, Gurney, Anderss. B. Damaral. p. 358 

 (1872). 



Hab. West Coast of Africa from the Gambia down to Walvisch 



