218 LAEUS. 



nape with grey streaks. N. Europe down to about 50° N., ranging in winter to Canaries, 

 Mediterranean and Egyptian coast, Greenland, N. America, and Bermuda. 



L. dominicaims. 23". Legs olive. Bill yellow, red at angle. Resembles L. marinus, but 

 first quill is white for 2", and second quill has small white mirror of irregular shape. S. America 

 to S. Africa and New Zealand. 



Quills mostly black. Mantle blue-grey. 



235. Lams cachinnans. The Yellow-legged Herring-Gull. 



(? 23" to 25f"; If to 2 lbs. 6 oz. Legs bright yellow. Bill yellow, red 

 below. Eye -ring vermilion. Head, neck, tail, and below white. Mantle, 

 secondaries, and tertiaries grey. Paler than in L. affinis, and merely a climatic 

 race of L. argentatus. S. Europe, N. Africa, and S.W. Asia, ranging in winter 

 as far east as Bay of Bengal. (B. 1495. S.F. i. 270.) See illustration, p. 219. 



Also L. argentatus. 24". The Herring-Gnll. Legs flesh colour. Bill yellow, red angle. 

 Orbital ring pale yellow. Remiges thirty-four. All primaries tipped white. First quill 

 white tip 2J", which is divided by a narrow black bar into "tip" and "mirror." Second 

 quill blackish for nearly J" on both sides of shaft, with black subtermlnal bar, a white mirror, 

 and on inner web a broad grey wedge. Fourth quill with grey on both webs above the bar. 

 Sixth quill grey without a bar. The remaining quills grey, with white tips. — In vnnter : Head 

 and neck streaked brown and grey. N. Europe, Greenland, and N. America, southwards in 

 winter to Bermudas, California, Mediterranean, Black and Caspian Seas. 



L. vegce. 24". Resembles L. cachinnans, but legs are pale flesh colour. Arctic coast of 

 Siberia, southwards in winter to China, Japan, and Formosa. 



L. audouini. 20"- Legs olive. Bill red, banded black, tip yellow. First quill black, 

 with small white spot on inner web. Third quill, black, with grey wedge on inner web. 

 W. Mediterranean. 



L. delawarensis. 18J". Legs greenish. Bill greenish, with black zone and yellow tip. 

 Mantle pearl-grey. First quill with long white mirror on both webs, then a black bar and tip 

 white. Second quill with smaller white mirror and grey wedge on inner web. Third quill 

 without mirror, more white at tip and grey on greater part of both webs. N. America. 



L. californicus. 20". Legs greenish. Bill yellow, with red spot near tip. Eye-ring 

 vermilion. First quill black, with shaft and end white. Second quill with black shaft and 

 white mirror, black subtermlnal bar and white tip. W-N. America. 



L. canus. 17" to ISJ". The Common Gull. Legs greenish. Bill greenish, with yellow 

 tip. Orbital ring vermilion. Remiges thirty-one. First quill black, with white subtermlnal 

 mirror 2" long. Second quill black, with grey basal wedge and smaller white mirror. Third 

 quill black, with grey at base on both webs and sometimes a small subtermlnal white spot. 

 Fourth, fifth, and sixth quills chiefly gi'ey, with black bars and broad white tips. — In winter : 

 Head and upper neck streaked and mottled ash-brown. N. Europe and Asia, southwards in 

 winter to Mediterranean, NUe Valley, and Persian Gulf. From Kamschatka to China and 

 Japan. 



L. bracTiyrhynchus. 17"- Legs olive. Bill olive, tip yellow. Orbital ring vermilion. 

 First quill with long white mirror on both webs, followed by subterminal black bar. Second 

 quill with min-or and white bar. Western portion of Arctic and sub- Arctic America. 



Quills devoid of black ; mostly pale grey or white. 



L. glaucesceus. 25" to 26". Legs flesh-colour. Bill yellow, angle red. First quill white 

 at tip for 2". Second quill with white subterminal spot on each web and white tip. Third 

 quill without distinct spots and with white tip. Behring Sea, Kamschatka, and in winter 

 south to California and N. Japan. 



L. nelsoni. 23"- Legs yellow. Bill yellow, with red spot. First quill ash-grey on outer 

 web, with pale stripe i" wide next shaft. 3" of tip white. Alaska and N.W. America. 



L. humlieni. 19J". Legs yellow. Bill yellow, angle red. Third and fourth quills with 

 defined subterminal bar across both webs. Bafiin's Land. 



L, glaucus. 29". The Glaucous Gull. Legs pink. Bill yellow, angle red. Eye-ring 

 orange. Head, neck, tail, and below white. Mantle pale grey. Primaries pearl-grey basally 

 and tipped white on outer webs. — In winter: Head and neck mottled pale brown. Circum- 



