WITH SPECIAL REFERENCE TO THE CETACEA. I 9 
adopting some other route (possibly more to the westward) so 
as to be quite unknown to us in the adult stage. Precisely 
where they pass the winter months is still a matter of 
uncertainty, and these remarks will apply equally to the 
White-beaked Dolphin, another typical migrant belonging 
to this order. 
With the active prosecution of the Fin Whale fishery on 
the Norwegian coast and in the Newfoundland waters, our 
knowledge with regard to the habits, distribution, and 
seasonal movements of the Balamopteridae has been greatly 
increased, and it has been found that vast as is the range 
of the species comprised in this family, its individual members 
are not by any means such erratic wanderers as they have 
been generally regarded.* Their line of migration is from 
south to north on each side of the Atlantic, and although 
they are specifically the same, it is extremely probable that 
under normal circumstances no interchange takes place 
between those inhabiting respectively the eastern and western 
sides of that ocean : indeed, Dr. F. W. True, who in his 
monograph of the Whalebone Whales of the Western North 
Atlantic has treated the subject with the thoroughness which 
characterises all his work, shows that the Newfoundland 
Whales differ in some respects from those killed by the 
Norwegians, and are smaller, species for species, in all their 
proportions, the reasonable conclusion being that the east 
and west sides of the Atlantic respectively are frequented 
each by a distinct race of the same species. 
If we turn to the Whales of the genus Balsena, of which, 
probably, there are only two sp>ecies, but several races, we 
find the popular belief expressed even in the present day by 
some writers of repute that the Whale hunted in very early 
times by the Basques in the temperate waters of the North 
Atlantic has by constant persecution been driven north into 
the Polar Seas, whereas nothing can be further from the truth ; 
* The Californian Gray Whale ( Rachiatiectes glaucus, Cope) is a lypical 
example ; it is restricted to the Pacific Coast of North America, according to 
Scammon, wintering not lower than 40' North Latitude and migrating in 
summer as high as the Arctic Circle. 
C 2 
