222 Stfjneger, Aiialecta Ornithologica. [J"'y 



Type: U. S. Nat. Mtis. No. 92,885. 



Syn. 185S. — Lams cachinnans Kittlitz, Denkw. Reise, I, p. 336 

 {nee Pall.). 



1S58. — Lartis ai-gentatus Kittlitz. op. cit. II, p. 225 {fart.'). 



i860. — Larus argcntatiis var. cachinnans Schrenck, Reise Amurl. I, p. 



504- 

 1871. — '^Lanis fiiscescens Mus. St. Petersb." Meves. OEfv. Sv. Vet. 



Akad. Forhandl. 1871, p. 7S7. 

 1874. — -Larus marinus Swinh. Ibis, 1874, p. 165 {nee Linn.). — Saun- 

 ders, P. Z. S. 1878, p. 180 {part.). — Seeb. Ibis, 1879, p. 24. — 

 Blak. and Pr. Tr. As. Soc. Japan, X, 1882, p. 104. — Ridgw. 

 Bull. Nutt. Orn. CI. 1882, p. 60.— Bean, Pr. U. S. Nat. Mus. 

 1882, p. 168. — Nelson, Cruise Corwin, p. 107 (1883). 

 1876. — Larus pclagicus Taczan. Bull. Soc. Zool. France, 1876, p. 263 



{nee Bruch). 

 Habitat. Coast of Kamtschatka and other parts of the North Pacific. 

 This species was found by me in small numbers on Bering- 

 Island, near Kamtschatka, during the spring of 1883, and a single 

 specimen was obtained on May 5. I afterwards met with it on 

 the mainland of Kamtschatka in the vicinity of Petropaulski, 

 where it breeds. 



Remarks. The color of the mantle is pure bluish slate-gray 

 without any mixture of brownish, of a shade just between the 

 same parts in La^-iis occidental is and L. dotninicus., being a 

 little lighter than the lightest L. niai'inus I have seen, and easily 

 distinguishable from the latter by the pureness of the gray. 



Characteristic of the wing-pattern is the presence of a well- 

 developed 'wedge' on the inner web of the first primary, as dis- 

 tinctive from marinus^ as well as the absence of a similar wedge 

 on the outer webs of the second to fourth primaries, in which it 

 differs from cachinnans and argentatus. The 'mirror' on the 

 second primary is also peculiar, resembling, however, the pattern 

 of the corresponding quill in L. cachinnans. In the third pri- 

 mary the large white spot at the end of the gray wedge is very 

 characteristic. It may tp.us be seen, that while the second 

 primary shows less white than in marinus and argentatus^ the 

 third has more of the same color than is the case in the latter two 

 species and in cachinnans. 



Iris of a clear yellowish cream-color. Bill deep gamboge 

 yellow with whitish tip and tomia ; an orange i-ed spot on each 

 side of the lower mandible ; angle of mouth yellowish flesh-color. 

 Naked eye-ring reddish violet gray. Feet pinkish flesh-color ; 

 nails horny black with whitish tips. (From the fresh specimen !) 



