188 



Hah. North America, breeding in the Fur Countries, and raigrating 

 as far south as Bermuda (exceptionally) in winter ; occasionallj- in 

 the United Kingdom, and once in Heligoland. 



n. Imni. st. 

 h. Ad. sk. 



c. S juv. sk. 

 (I. $ juv. sk. 



e. J imm. sk. 



/. Ad. sk. 

 y. cJ ad. sk. 

 h-u. tS 2 ad., vix 

 ad., et imm. sk. 



V. (5 ad. ak. 



w. Imm. sk. 



x-z, a'-f/'.d 2 ^^-i 

 vixad.,etjuv. sk. 



h', i . (S 2 ^'i^ 'id. 

 et juv. sk. 



li, I''. 6 2 ad. sk. 



VI . Vix ad. sk. 

 n'. Juv. sk. 



o'. Juv. sk. 



/»', </. (S 2 ^^- ct 



vix ad. sk. 

 >•'. (S ad. sk. 



.s'. Ad. St. 

 /'. Skeleton. 

 u' . Skeleton. 



North America. 



Godbout, Canada, summer 



[N. A. Cmneau). 

 Boston, Massachusetts, autumn. 

 Ipswich, Mass., Aug. 24 (^C.J. 



Mfiynard). 

 Lyons Falls, New York State, 



May {A. J. Dayan). 

 Lake Michigan, summer. 

 Chicago, April (E. W. Nelso7i). 

 Wa.shiugton, D.C., April (7/. 



W. Henshaic). 

 Washington, B.C., April {R. 



Ridgivay). 

 Fort Macon, N. Carolina, May 



{Elliot Coves). 

 Corpus Christi, Texas, Dec, 



Jan. {F. B. Armstrong). 

 Ventura, California, Nov. 



{Henshaw). 

 San Mateo, California, April 



(Hepburn). 

 49th Parallel (J". K. Lord). 



Fraser River (J. K. L.). 



Vancouver Is. (/. K. L.). 



St. Michael's, Alaska, Sept. 



{E. W. Nelson). 

 Lgashik River, Alaska, Sept. 



\ U.S. Nat. Mus.). 

 North-West America. 

 North America. 

 Monterey, California. 



6. Larus serranus. 



Lord Ampthill [P.]. 

 Salvin-Gudmau Coll. 



Salvin-Godman Coll. 

 II. Saunders Coll. 



Salvin-Godman Coll. 



II. Saunders Coll. . 

 Salvin-Godman Coll. 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



II. Saunders Coll. 



N. Amer. Boundary 



Comm. [P.]. 

 N. Amer. Boundary 



Comm. [P.]. 

 N. Amer. Boundary 



Comm. [P.]. 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 



Purchased. 

 I'urchased. 

 J. II. Gurney, Esq. 



[P.]. 



Larus serranus, Tsch. Wiec/rn. Arch. 1844, pt. i. p. 314; id. Faun. 

 Peruan., Aves, pp. 53, 307 (1845-46); Gray, Gen. B. iii. p. 654 

 (1846) ; id. Hand-l. B. iii. p. 115, no. 10992 (1871) ; Set. S^ Salv. 

 P. Z. S. 1871, p. 577 (Neotropical : revision) ; Allen, Bull. Harvard 

 Coll. iii. p. 359 (1872 : Lake Titicaca, breeds in Feb.) ; Scl. ^ Salv. 

 Nometicl. Av. Neotr. p. 148 (1873) ; Saunders, P. Z. S. 1878, p. 196 

 (revision Larinse) ; id. Journ. Linn. Soc, Zool. xiv. p. 399 (1878: 

 distribution) ; Scl. ^Salv. P. Z. S. 1879, p. 641 (Bolivia) ; Sannders, 

 P. Z. S. 1882, p. 525 (Callao Bay) ; Taczan. Orn. Perou, iii. 

 p. 452 (1886) ; Scl. P. Z. S. 1886, p. 404 (Tarapaca) ; MacFarl. 

 Ibis, 1887, pp. 204, 207 (Callao Bay) ; Scl. P. Z. S. 1891, p. l.'}7 

 (Tarapaca); Hartert, Kat. Voyelsamml. Senckenb. p. 241 (1891 : 

 Valdivia, Chile) ; Berlepsch Sf Stolzmann, P. Z. S. 1892, p. 400 

 (Callao). 



Xema cirrhocephalum {nee Grw/), Peale, Zool. U.S. ExjjI. E.ip., 

 i/iVr7.s, p. 289 (1S48). 



