228 
ANAS MARILA. 
neck and breast, black, spreadinnf round to the backl 
back and scapulars, ivbite, thickly crossed \i ith waving 
lines of black ; lesser coverts, dusky, pon dered nith 
veins of n hitish ; primaries and tertials, broniiisl' 
black ; secondaries, v\ hite, tipt n ith black, forming th^ 
gpeciilnm ; rump and tail-coverts, black ; tail, shorb 
rounded, and of a dusky brown ; belly, white, crossi’“ 
near the vent with waving lines of ash f vent, black! 
legs and feet, dark slate. 
Such is the colour of the bird in its perfect statC' 
Youni;- birds vary considerably, some having the hei>“ 
black mixed with gray and ])uq)le, others the bac* 
dusky, nith little or no white, and that irregulafV 
dispersed. 
The female has the front and sides of the same wliit^’ 
head and half of the neck, blackish brown ; brca*^’ 
spreading round to the ba(dv, a dark sooty bro"'’’’ 
broadly skirted with whitish; back, black, thin'^ 
sprinkled with grains of white; vent, whitish; win!?® 
the same as in the male. 
The wind])ipe of the male of this species is of larjf 
diameter; the labyrinth similar to some others, thoUr® 
not of the largest kind ; it has something of the shijl’^ 
of a single cockle shell ; its open side, or circular m*’ 
covered n ith a thin transparent skin. Just before 
windpipe enters this, it lessens its diameter at le*^ 
two-thirds, and assumes a ilattish form. ^ 
The scaup dui;k is well known in England. * 
inhabits Iceland and the more northern |)arts of 
continent of Europe, Lajiland, Sweden, Norway, 
Russia. It is also common ou the northern shores ® 
Siberia. Is very fre(jueut ou the river Ob. Breee® 
in the north, and migrates southward in winter. ^ 
inhabits America as high as Hudson’s Bay, and reth'*’ 
from this last place in October.* 
* Latham. 
