210 THE -WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



Van Beneden and Gervais follow the same course in the Osteographie, adding 

 Alaska to the list of Araei'ican localities on the authority of Chamisso. They notice 

 the form from Greenland which Holboll pi-oposed to call microcephala, 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 BaUenoptero}, 

 as in Bahena mysticetus, there are individuals with smaller heads" (S, 152). 



Van Beneden, in 1889, again expresses the opinion that the Greenland and 

 European specimens are of the same species, and includes also Scammon's B. 

 davidsoni, from tlie Noith Pacific. 



