15. LARUS. 173 



f. Mantle darker, slate-grey; 

 subterminal zone on bill ill- 



_ defined or absent calif ornicus, p. 276. 



k*. Bill more slender, depth of lower 



mandible at angle of genys less 



than 0-25 in. 



g'\ Size larger, wing about 15 



inches ; basal part of 2nd 



and 3rd quills darker and 



with less grey camis, p. 277. 



h". Size smaller, wing not ex- 

 ceeding 14 inches; basal por- 

 tions of 2nd and 3rd quills 



, ^ .„ , . chiefly grey brachyrMjnchus, p. 283 



A. Quills devoid of black : mostly pale grey 

 or white. 

 m'. Quills pale grey, tipped with white, 

 and subterminatly chequered with ash- 



, ^^^J, glaucescetis, p. 284. 



n. Quills very pale grey, shading into 

 white terminally, the three or four 

 outer ones marked with ash towards 

 their extremities. 



p''. Larger, wing about 17 inches nelsoni, p. 287. 



q". Smaller, wing 15-5 inches : 4th 



quill more distinctly barred .' kumleini, p. 288, 



o'. Quills white, shading into palest grey 

 at the base. | 



r''. Larger, wing 17-18 inches or more, c/laucus, '^. 289. 

 s". Smaller, wing proportionately longer, 



16 inches '. leucopterus, p. 295. 



1. Larus minutus. 



PLarus albus, Scop. Ann. i. Hist. Nat. p. 80, no. 106 (1769). 



Larus minutus, Fallas, Jleise Euss. Heichs, iii. p. 702, App no 35 

 (1776) ; G7n. S. N. i. p. 695 (1788) ; Hetzim, Faun. Suec. p. 278 

 (1790) ; Lath. Ind. Orn. ii. p. 813 (1790) ; Meyer u. Wolf, Taschenb. 

 ii. p. 488 (1810); Pallas, Zoogr. Rosso-Asiat. ii. p. 331 (1811)- 

 Temm. Man. d'Orn. p. 508 (1815); Meyer, Vdg. Liv- u] Esthl 

 p. 237 (1815) ; Leach, Syst. Cat. Matnm. etc. Frit. Mus. p. 41 

 (1816) ; Meisner Sf Schinz, Vog. Schtveiz, p. 277 (1815) ■ Nilss 

 Orn. Suec. ii. p. 179 (1817) ; Temm. Man. d'Orn. 2""= ^d ' p 787 

 (1820) ; Meyer, Taschrnb. iii. p. 205 (1822) ; Brehm, Lehr'b. p. 727 

 (1824) ; Steph. tn Shaiv's Gen. Zool. xiii. pt. 1, p. 206 (18''6) • £n 



^"o--, ^^o^of • I'- K'^- ^^^ (^^^'^^ ; "''^"^^'•' ^f^"^'' Falmipedes, 

 pi. 31 (1828); Savi, Orn. Tosc. iii. p 68 (1831) : Selby, Brit. B ii 

 p. 484, pi. xcii. (1833) ; St.-Hilaire, Eiplor. Moree, Zool. p. 65, 

 Atlas, pi. V. (1833) ; Jenyns, Man. Brit. Vertebr. p. 271 (1835) • 

 Te7nm. Man d'Orn ed 2, pt. 4, p. 490 (1840) ; Crespon, Orn. 

 Gard, p. 492 (1840) ; Usaum. Vog. Deutschl. x. p. 242, pi ^58 

 (1840) ; Keys. u. Bias. Wirb. Fur. p. xcv & p. 241 (1840) ; Nordm. in 

 Demtd. Voy. Ftm. Merid. iii. p. 281 (1840) ; Selys-Longch. Faune 

 Beige, p. 151 (1842) ; Crespon, Faune Merid. ii. p. 127 (1844) • 

 Muhle, Orn. Griechenl. p. 137 (1844) ; Schl. Rev. Crit. p cxxvii' 

 (1844); larrell, Brit. B. 2nd ed, iii. p. 543 (1845); Grau, Gen 

 B. iii. p. 654 (1846) ; Beyl. Orn. Fur. ii. p. 330 (1849) ; Thojnps. 



