LARUS. 
33 
ered ali over with soft yellowish 
gray down, whiter in tint on the 
face, throat, and abdomen; forehead 
blackish brown ; entire upper parts 
spotted here and there with large 
blackish spots, one or two spots be- 
ing also on the throat, under parts 
generally unspotted, except that on 
the flanks there are some irregular 
black marks. It may be distin- 
guished from the young of other 
Gulls by a large black spot which 
touches the base of the upper man- 
dible, and which is never absent, 
though often varying in size.” 
(DrzssER.) Length 17.00-18.50, 
wing 14.00-14.50 (14.30), culmen 
1.35-1.60 (1.45), depth of bill through 
angle .38-.50 (.44), tarsus 1.90-2.25 
(2.02), middle toe 1.32-1.65 (1.43). 
Eggs 2.29 ~ 159. Hab. Northern 
portions of eastern hemisphere ; ac- 
cidental in Labrador? 
56. L. canus Linn. Mew Gull. 
Jj Gray wedge on inner web of third quill 
always terminated with white, and 
this carried beyond tip of the sixth 
—often even beyond the tip of the 
fifth —quill; even the second quill 
often with a white spot at end of the 
gray “wedge” on inner web; plu- 
mage of adult otherwise as in JL. 
canus, but black of primaries much 
more restricted. Nearly adult: Sim- 
jlar to the adult in every respect 
except coloration of the primaries, 
which have the dark spaces slaty or 
very dull blackish, instead of deep 
black, and more extended, the white 
tips of some of the quills wanting ; 
tail sometimes (in younger individu- 
als) more or less blotched with dusky 
at tip, and upper coverts sometimes 
(in still younger birds) faintly barred 
with grayish brown. Young: Above 
