194 



q. cJ ad. sk. 

 r. Ad. sk. 

 8. S juv. sk. 



t. Ad. sk. 



w-70. ad., vix ad., 



et juv. sk. 

 x-c'. (S 2 ad. ; 



d'. (S imm.sk. 

 e' . 5 juv. sk. 



/. S juv. sk. 



g'. Imm. sk. 



h'-k'. Ad. et 



imm. sk. 

 I'-n'. Juv. et 



imm. sk. 

 o'-q'. c? 2 imm. 



et juv. sk. 

 r'. Ad. sk. 



«'. Ad. St. 



t'. 2 juv. sk. 



Mexico. 



Mexico, winter. 



Zacatecas, Mexico, August 



( W. B. Richardson). 

 Near City of Mexico. 

 West coast of Mexico. 



Champerico, Guatemala, May 



30, 1873 (O. Salvin). 

 Chiapam, Guatemala, Jan. 



1863 (O. S.). 

 Payta, Peru, Jan. 7 {Adml. 



Markham). 

 Oallao Bay, Peru, Jan. (72. 



Jump). 

 Callao Bay, April 11 {Commr. 



J.R. li. Mac Far lane). 

 Iquique, winter (<S'. F. Rmvland). 



Coquimbo, Nov. {Adml. Mark- 

 ham). 



Coquimbo (in full breeding- 

 plumage) {Adml. Markham). 



Valparaiso. 



Chile ( Verreau.r). 



8. Larus atricilla. 



Purchased. 

 Salvin-Godman Coll. 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 

 H. Saunders Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



H. Saunders Coll. 



II. Saunders Coll. 



H. Saunders Coll. 



H. Saunders Coll. 



H. Saunders Coll. 



Sir W. Burnett & 

 Capt. Fitzrov,R.N. 

 [P.]. 



Salvin-Godman Coll. 



Laughing Gull, Cateshy, Nat. Hist. Carol, i. p. 89, pi. 89 (1733); 



Lath. Gen. Si/n. iii. pt. 2, p. 383 (1785: chieflv) ; ? Montagu, Orn. 



Diet. i. (1802: Winchelsea, juv.); Yarr. Brit. B. iii. p. 439 



(1843 : ex Montagu). 

 La Mouette rieuse, Briss. Orn. vi. p. 192, pi. xviii. fig. 1 (1760). 

 Larus atricilla, Linn. Sgst. Nat. i. p. 225 (1766 : ex Cateshy) ; Gm. 



S. N. i. p. 600 (1788) ; Lath. Lid. Orn. ii. p. 813 (1790 : part.) ; 



Temm. Man. d'Orn. ed. 2, pt. ii. p. 779 (1820: the adult, but the 



young = Z. melanocephalus) ; Brehm, Lehrb. p. 722 (1824) ; ? Bp. 



Ohs. No77ie}icl. Wilson's Orn. no. 246 (1826) ; id. Ann. Lye. N. Y. 



ii. p. 369 (1828) ; Jard. ed. Wilson's Amer. Orn. iii. p. 216, pi. 74. 



fig. 4 (1832) ; ? Bennies ed. Mont. Orn. Diet. p. 259 (1833) ; 



Nuttall, Man. Orn. ii. p. 291 (1834) ; Jenyns, Man. Brit. Verteb. 



p. 274 (1835: ex Montaqu) ; Audub. Orn. Biogr. iv. p. 118, 



pi. 314 (1838) ; id. Synop. p. 324(1839); D'Orbigny in Sogra's 



Hist. Nat. Cuba, p. 212 (1839) ; Keys. u. Bias. Wirb. Eur. pp. xcvi, 



243 (1840) ; Temm. Man. d'Orn. 2e 6d. 4e pte. p. 483 (1843) ; Schl. 



Rev. Crit. p. cxxvii (1844) ; Giraud, B. Long Isl. p. 358 (1844) ; 



Audub. B. Amer. 8vo ed. vii. p. 136, pi. 44.3 (1844) ; Yarr. Brit. 



B. 2nd ed. iii. p. 557 (1845 : e.v Montaqu) ; Gray, Gen. B. iii. 



p. 654 (1846) ; Degl. Orn. Fur. ii. p. 321 (1849) ; Wedderb. in 



Jard. Contr. Orn. 1850, p. 38 (Bermudas) ; Meyer, Brit. B. vii. 



p. 131, pi. 303 (1857) ; Jmes, Nat. Bermuda, p. 92 (1859 : once) ; 



Gi-ay, Cat. Brit. B. p. 234 (1863: "Winchelsea" [error; not 



Montagu's specimen]); Schl. Mus. P.-Bas, Lari, p. 44 (1863); 



Salvin, Ibis, 1865, pp 188, 190 (Guatemala) ; Degl. Sr Gerbe, Orn. 



Eur. ii. p. 431 (1867); Sundev. CEfv. E. Vet.-Akad. Stockh. Fork. 



