260 



dark centres and bufRsh- white margins to the feathers of the mantle; 

 rectrices nearly uniform brown, with only a little marbling at the 

 bases and on the outermost ; primaries brown, paler on their inner 

 webs ; edge of the wing and coverts almost unmottled greyish brown ; 

 under surface brown, the tail-coverts striated : bill dark horn-colour, 

 paler at the base : tarsi and toes reddish brown. 



Obs. Examples from Northern Japan and the Amurland coast are 

 decidedly darker than birds from the Kuril Islands. The specimen 

 from Hakodadi, which I formerly identified with L. marimis. is 

 quite as dark on the mantle as average examples of that species, 

 and at the time I was not aware that L. mcninus had a mirror on 

 the 2nd primary while still immature. Now that a series is avail- 

 able for examination, I consider that L. schistisagus has no close 

 affinity with L. marinus, but rather inclines to the Herring-Gull 

 section. 



Hah. Bering Sea, Okhotsk Sea, and North Pacific down to 

 Northern Japan in winter. Headquarters appear to be about the 

 Kuril Islands. 



a. Ad. sk. ; b-e. 



S 2 ad. sk. 

 y. $ imm. sk. 



ff. Ad. sk. 



h. S ad. sk. 



i. 2 ji^'^' ^^^ 



Kurd Islands {S. J. Snoiv). 



Capt. Blakiston [P.]. 

 Seebohm Coll. 



Kuril Islands, June 1 {H. J. 



Snow) . 

 Mouth of the Amur, May 21 Seebohm Coll. 



{Dr. L. Schrenck). 

 Hakodadi, N. Japan (Capf. Seebohm CoU. 



Blakistoti). 

 N. Japan (Ad7nl. H. St. John). Tweeddale CoU 



32. Larus argentatus. 



Le Goiland cendre, Brisson, Orn. vi. p. 160, pi. xiv. (1760) ; Daubent, 



PI. Enl. pi. 253 (1786). 

 Le Goiland vari6 ou le Grisard, Brisson, Orn. vi. p. 167, pi. xv, 



(1760). 

 Larus argentatus, Briinn. Orn. Bor. p. 44, no. 149 (1764: Christian- 



soe) ; Gm. Syst. Nat. i. p. 600 (1788 : e.v Briinn.) ; Bonn. Encyc. 



Meth. i. p. 83 (1790) ; Leach, Syst. Cat. Mamm. ^-c. Brit. Mus. 



p. 40 (1810) ; Temm. Man. d'Orn. 2°= ed. p. 764 (1820) ; 



E. Sabine, Parry^s Ist Voy., App. p. cciv (1821 : North Georgian 



Is., black wing-marlrings) ; Boie, Isis, 1822, p. 562 ; Meyer, Zmiit. 



Taschenb. iii. p. 195 (1822) ; Brehm, Beitr. Vogelk. iii. p. 770 



(1822) ; id. Lehrb. p. 710 (1824) ; J. Sabine, Frankli7i's Journ., App. 



p. 695 (1823 : Hudson Bay, black wing-patches) ; Richards. 



Parry's 2nd Voy., Suppl. p. 358 (1825 : Winter Id., N. of Melville 



Pen., typical) ; Steph. in Shaw's Gen. Zool. xiii. pt. 1, p. 191 



(1826) ; J. C. Moss, Parry's 3rd Voy., Suppl. p. 104 (1826 : typical) ; 



Werner, Atlas, Palmipedes, pi. 16 (1828) ; Bp. Ann. Lye. N. ¥. 



ii. p. 360 (1828); Vieill. Faune Franq., Ois. p. 393 (1828?); 



Fleminy, Brit. Anim. p. 140 (1828) ; Kaup) Natiirl. Syst. p. 58 



(1829): Selby, Brit. B. ii. p. 504, pis. xcvi. & xcvi.* (1833); 



Nuttall, Man. Orn. ii. p. 304 (1834) ; Jenyns, Man. Brit. Verteb. 



p. 276 (1835) ; Auduh. Orn. Bioyr. iii. p. 588 (1835) ; Eyton, Cat. 



Brit. B. p. 53 (1833) : Gmild, B. Eur. v. pi. 434 (1837) ; Bp. 



I 



