3 SO CHECK-LIST OF NORTH AMERICAN BIRDS. 



3. Cepphus carbo PALL. 



Sooty Guillemot. 



Cepphus carbo PALL. Zoog. Rosso- As. II. 1826, 350. 

 [B 728, C 633, R 762, C 873.] 



No evidence of its occurrence in North America. (Cf. STEJN. Proc. 

 U. S. Nat. Mus. VII. 1884, pp. 225-227.) 



FAMILY LARID-3S. 

 4. Xema (Creagrus) furcata (NEB.). 



Swallow-tailed Gull. 



Larus furcatus NEB. Voy. 'Venus,' Atlas, pi. 10 (1846). 

 Xema furcatum COTJES, Key, 1872, 317. 



[B 679, C 559, R 678, C 791.] 



In all probability erroneously accredited to North America. Only 

 three examples are known, the type, said to be from Monterey, Cal., 

 one from the Galapagos, and one from the coast of Peru. 



FAMILY PROOELLARIID^J. 



5. Puffinus kuhlii (BOIE). 



Cinereous Shearwater. 



Procellaria kuhlii BOIE, I sis, 1835, 257. 

 Puffinus kuhlii BONAP. Consp. II. 1856, 202. 



[B6 5 i, C 59 6, R 7 o8, C8 3 i.] 



An Eastern Atlantic species, of which no American specimens are 

 known to exist in collections. 



6. Oceanodroma hornbyi (GRAY). 



Hornby's Petrel. 



Thalassidroma hornbyi GRAY, P. Z. S. 1853, 62. 

 Oceanodroma hornbyi BONAP. Consp. II. 1856, 195. 



[B 641, C 592, R 727, C 827.] 



