400 MOTACILLID A. 
the localities inhabited by the true M7. alba. It is pro- 
bable, as suggested by Mr. Gould, that the Channel is 
the line of boundary, although stragglers from either side 
may have been, and probably will be, found on the opposite 
shores. It appears from what is known of the habits of 
our bird, and the circumstance of Mr. Gould having re- 
ceived examples of it from Norway and Sweden, that our 
Pied Wagtail migrates due north and south. Brunnich, 
in his Ornithologia Borealis, page 70, decidedly refers to a 
variety of MZ. alba, besides including the bird itseif; but 
the excellent coloured figure in the Fauna of Scandina- 
via, by M. Nilsson, of Lund, now in course of publication, 
represents the true J7. alba of Linnezus, the bird next to 
be described. 
The adult male in the plumage of the breeding season, 
which begins to appear in March, and is completed in 
April, has the beak and irides almost black , the forehead, 
the lore, or space between the beak and the eye, the part 
surrounding the eye, the ear-coverts, the cheeks, and a 
portion of the side of the neck, pure white; the crown of 
the head, nape of the neck, back, scapulars, rump, and 
upper tail-coverts, black; the small and great wing-co- 
_verts black, broadly edged, and tipped with white; pri- 
mary and secondary quill-feathers black, with narrow 
lighter-coloured outer edges; the third, fourth, and fifth 
primaries, with some white on the inner web ; the tertials, 
one of which is very long, black, with broad white outer 
borders; the eight central tail-feathers black; the two 
outer tail-feathers, on each side, white, with a black edge 
on the inner web; chin, throat, and neck in front, and 
on the sides, black, which, uniting with the same colour on 
the anterior part of the wings and scapulars, surrounds 
the white on the side of the neck; breast, belly, and 
