Mil. II. SEEBOIIM ON THE BIIIDS NORTH OF .\L.\SKA. 309 
Anser rrenta nigricans. The Pacific form of the Lrent 
Goose, is principally known on migrations, but a few remain to 
breed. 
Anas acuta. The Pintail was only seen on migration. 
PuLiGULA GLACiALis. The Loiig-tailoJ Luck arrived late in 
May, and was one of the commonest birds. They begin to lay 
about the middle of June. 
SoM.vTERiA STELLERi. Stcllcr’s Duck arrived early in June, and 
was common on migration. 
SoM.vTERiA sPECTAWLis. Tho King Eider was by far the 
commonest bird at Point Barrow. They arrive end of April or 
beginning of Afay. Thousands pass on migration, and a few 
remain to breed. 
SoJiATERiA FisciiERi. The Spcctaclcd Eider was rare, but 
evidently bred in the neighbourliood. 
SoMATERiA V-NiGRUM. The Pacific Eider does not appear until 
tho middle of May, and is not nearly so common as tho King 
Eider. Tho Natives said that it bred further east. 
A comparison of these two lists of birds shows results which are 
decidedly in favour of an Arctic Kegion. Out of about fifty 
species found in the Lena Delta, thirty were also found at Point 
Barrow, and of the twenty which were not found in the latter locality, 
at least half were only rare stragglers from tho Paliearctic Region, 
whilst of tho twenty-four found at Point Barrow, but not in the 
Lena Delta, at least a third were rare stragglers from the Nearctic 
Region. 
[N.B. — Tho two procoding article.^ have not been revi.^ed bj- Mr. Seebolim, 
owing to his absence from England. — Ed.] 
