CATALOGUE OF BRITISH BIRDS. 
259 
Larus procellosus, pt., Bechst, Naturg. Dents, \v. p. 647. 
Laroides procellosus, Brehm, Vog. Dents, p. 750. 
Laroides canus, Brehm^ Vog. Dents, p. 751. 
Laroides canescens, Brehm^ Dents, p. 753. 
Common Gull, Mont. Orn. Diet.; Bew. Brit. B. (1804) ii. p. 218, 
fig. ; Penn. Brit. Zool. (1812) ii. p. 184, pi. 34, low. fig. ; Selby., 
Brit. Orn. ii. p. 490; Yarr. Brit, B. 2 edit. iii. p. 570, fig. 
Winter Gull, Mont. Orn. Diet.; Bew. Brit. B. (1804) ii. p. 221 ; 
Penn. Brit. Zool, (1812) ii. p. 185. 
Gonld, B. of Eur. pi. 437. 
a. Devonshire. From Col. Montagu’s collection. 
h. Thames. Presented by A. Cooper, Esq., R.A. 
c. Hayling s Island. Presented by J. B. Tyndale, Esq. 
d. Hills of Hoy, Orkney. Male. From Mr. J. Baker’s collection. 
e. Hills of Hoy, Orkney. Female. From Mr. J. Baker’s collec> 
tion. 
f—h. Hills of Hoy, Orkney. Very young. From Mr. J. Baker’s 
collection. 
i. Sternum. England. Presented by John Ray, Esq. 
b. Chroicocephalus. 
7. Larus atricilla. The Laughing Gull. 
Larus atricilla, Linn. S. N. i. p. 225 ; Temm. Man. d’Orn. (1820) 
ii. p.779 ; Steph. Gen. Zool. xiii. p. 205 ; Flem. Brit. An. p. 142 ; 
Jenyns., Man, B. Vert. An. p. 273 ; Keys. ^ Bl. Wirhelth. Enr, 
p. 96 ; Schleg. Rev. Crit. des Ois, d' Eur. p. 127 ; G. R. Gray., Gen. 
of B. iii. p. 654. 
Larus ridibundus, Wils. Amer. Orn. pi. 74, f. 4. 
Xema atricilla, Boie., Isis (1822), p. 563. 
Larus plumbiceps, Brehm., Lehrh. p. 722. 
Gavia atricilla, Macgill. Man. N. H. Ornith. ii. p. 240. 
Laughing Gull, Mont. Orn. Diet.; Penn. Brit. Zool. (1812) ii. p. 
193 ; Yarr, Brit. B, 2 edit. iii. p. 557, fig. 
Gould., B. of Eur. pi. 426. 
a. Winchelsea. 
8. Larus ridibundus. The Black-headed Gull. 
Larus ridibundus, Linn. S. N. i. p. 225 ; Temm. Man. d’Orn. 1815, 
p. 504 ; Leaeh, Syst. Cat. Mam. ^ B. B. M. p. 40 ; Steph. Gen. 
