CATAtOaTJE or DRITI8H BIRDS. 235 



h, c. Carmaitlienshire. From Col. Montagu's Collection. 



d. Orkney Islands. From Mr. Bullock's Collection. 



e, f. Hills of Hoy, Orkney. From Mr. J. Baker's CoUection. 

 g. Hills of Hoy, Orkney. From Mr. J. Baker's CoUection. 

 h. Sternum. England. Presented by G. Ingall, Esq. 



10. Larus capistbattjs. TJie Masked GuU. 



Laxus capistratus, Temm. Man. d'Om. (1820) ii. p. 785 ; StepJi. 



Gen. Zool. xiii. p. 204 ; Flem. Brit. An. p. 143; Jenyns, Man. 



Brit. Vert. An. p. 272. 

 Larus ridibundus, pt., Keys. Sf Bl. Wirbelth. Eur. p. 95 ; Nairn. 



Tog. Deutsehl. (1840) x. p. 264; O. B. Gray, Gen. of B. iii. 



p. 664. 

 Larus ridibundus minor, Schleg. Bev. Crit. des Ois. d'Eur. p. 127. 

 Xema capistratus, Boie, Jsis,1822,p.563; Brehm,Vdg. JDeutschl. 



p. 762. 

 Chroicocephalus capistratus, Eyton, Cat. Brit. B. p. 53. 

 Gavia oapistrata, Kawp, Naturl. Syst. p. 99. 

 Masked Gull, Lath. Hist, of B. x. p. 139 ; Tarr. Brit. B. ed. 2. 



iii. p. 647, fig. ; id. ed. 3. iii. p. 566, fig. 

 Brown-headed Gull, Eyton, Hist. R. Brit. B. p. 63. 



a, Scotland. From Mr. Bullock's Collection. 



11. Lartjs PHILADELPHIA. Bonaparte's Gull. 



Sterna Philadelphia, Ord, Guthrie's Geog. two Am. ed. 2. p. 319. 

 Larus Bonapartii, Biehards. ^ Swains.Faun.Bor.-Amer. n.-p.425, 



pi. 72 ; Thompson, Ann. Sf Mag. N. H. 1848, p. 192 ; Newm. 



in Zool. 1848, p. 2069. 

 Xema Bonapartii, Pr. Bonap. Geogr. Comp. List of B. p. 62. 

 Larus capistratus, Pr. Bonap. 

 Chroicocephalus Bonapartei, Bruch. 

 Chroicocephalus Philadelphia, Baird. 

 Bonapartian GuH, Tarr. Brit. B. ed. 3. iii. p. 664, fig. 



Audub. B. ofAmer. pi. 324. 



(England, Scotland, and Ireland.) 



d. Htdeocolceits. 



12. Lahus MiNUTtrs. The Little GuU. 



Larus minutus. Pall. Reis. iii. p. 702; Temm.Man. d'Om. (1815) 



p. 508 ; Leach, Syst. Cat. Mamm. Sf Birds in B. M. p. 41 ; Steph. 



Gen. Zool. xiii. p. 206 ; Flem. Brit. An. p. 142 ; Jenyns, Man. 



Brit. Vert. An. p. 271 ; Keys. iSf Bl. Wirbelth. Eiir.^. 95; Naum. 



Vdg. Deutsehl. (1840) x. p. 242, t. 258 ; Schleg. Bev. Crit. des 



Ois. d'Eur. p. 127 ; 6. R. Gray, Gen. of B. iii. p. 654. 

 Larus atricilloides, FalJc. Reis. iii. p. 355, t. 24. 



