210 THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIO. 
Van Beneden and Gervais follow the same course in the Ostéographie, adding 
Alaska to the list of American localities on the authority of Chamisso. They notice 
the form from Greenland which Holb6ll proposed to call mécrocephala, on 
account of its relatively small head, and remark: “As many skeletons are now 
known from these parts (Greenland), and since thus far no one has found any dif- 
ferences between them, there is every reason to suppose that in these Balwenoptere, 
as in Lalena mysticetus, there are individuals with smaller heads” (8, 152). 
Van Beneden, in 1889, again expresses the opinion that the Greenland and 
European specimens are of the same species, and includes also Seammon’s /. 
davidsoni, from the North Pacifie. 
