226 



feathers almost uniform blackish brown ; under surface brownish, 

 with the grey beginning to show through. 



Young. Similar, but more decidedly brown in tint ; the feathers 

 of the wing-coverts and secondaries tipped with huffish. 



ffab. Pacific coasts of North America, from Vancouver Island to 

 Lower California and Mazatlan (breeding) ; in winter as far south 

 as Chiapam, Guatemala. Not found far from salt water. Breeds 

 on rocky islands. 



a. Vix ad. st. 



b, c. Ad. ; d. 

 Imm. sk. 



e. Juv. sk. 

 /. 5 imm. sk. 



ff. 2 vix ad. sk. 

 k. 2 ad. sk. 

 i. Juv. sk. 

 k. 5 vix ad. sk. 

 I. c? ad. sk. 

 m. (S ad. sk. 

 w, 0. J 5 ad. sk. 

 p. cJ ad. sk. 

 g, r. $ vix ad. .sk. 

 a. c? juv. sk. 

 t. <S juv. sk. 



Vancouver Island. 

 Vancouver Island. 



Salt Spring Isl., Vancouver Isl. 

 Fort Rupert, N. of Vancouver 



Isl., Oct. {Hejjburn). 

 Esquimalt, S. of Vancouver Isl., 



Oct. (Gervase Mathew, E.N.). 

 San Francisco Bay, Dec. (Hen- 



shaiv). 

 San Francisco Bay, Oct. {Dr. 



O. Finsch). 

 Farallones, San Francisco, 



April (Hejjburn). 

 FaraUones, San Francisco, 



May (W. H. Collms). 

 Santa Barbara, California, June 



(H. W. Henshaic). 

 Santa Barbara, California, Nov. 



{H. W. H.). 

 Santa Barbara, California, June 



{H. W. H.). 

 Ventura, California, Nov. {H. 



TV. H.). 

 San Jose, Guatemala, Jan. 



(O. -S.). 

 Chiapam, Guatemala, Jan. 

 (O. S.). 



19. Larus belcheri. 



J.K.Lord,E3(i.[C.]. 

 J. K. Lord, Esq. [C.]. 



Dr. Lyall [P.]. 

 H. Saunders Coll. 



H. Saimders Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



H. Saunders Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Larus belcheri, Vigors, Zool. Journ. iv. p. 358 (1829) ; id. Zool. 



Beechey's Voy. ^Blossom,' p. 39 (1839) ; Ch-ay, Gen. B. iii. p. 664 



(1846) ; Schkg. Mus. P.-Bas, Lari, p. 9 (1863: Peru, excl. syn.) ; 



Scl. ^ Salv. P. Z. S. 1871, p. 575; iid. Nomencl. A v. Neotrop. 



p. 148 (1873) ; Saunders, P. Z. S. 1878, p. 182 (revision Larinje) ; 



id. Journ. Linn. Soc, Zool. xiv. p. 396 (1878 : distribution) ; id. 



P. Z. S. 1882, p. 526 (Peru & Chile) ; Taczan. Orn. Perou, iii. p. 448 



(1886) ; MacFarlane, Ibis, 1887, p. 205 (Callao Bay) ; Oustalet, 



Miss. Sc. Cap Horn,Vi. (1891) p. 309; Berlepsch ^ Stolzm. P. Z. S. 



1892, p. 400 (Peru). 

 Adelarus belcheri, Bruch, J. f. O. 1853, p. 107 ; id. op. cit. 1855, 



p. 279 ; Bp. Naum. 1854, p. 212. 

 Larus melanurus (nee Temm.), Licht. Nomencl. Av. p. 99 (1854: Peru). 

 Leucophffius belcheri, Bp. C. R. xlii. p. 771 (1856) ; id. Consp. Av. 



ii. p. 232 (1857). 

 Larus fuliginosus {nee Gould), Cassin, U.S. Expl. Exp., Orn. p. 378 



(1858: Cape Horn to Callao). 



