THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIO. 189 
found in the case of both B. physalus and Megaptera, the latter hypothesis appears 
more probable. 
2. In external proportions, so far as may be judged from the limited data 
available in the case of European specimens, there is a very close correspondence 
between the Sulphurbottoms of the Eastern and Western North Atlantic, amount- 
ing to identity. 
3. In coloration no important difference is exhibited. 
4, The whalebone is of the same color in both American and European speci- 
mens and, so far as may be judged, of equal length. 
5. The lack of records and material precludes a judgment as to osteological 
characters, though in such matters as the total number of vertebrae and ribs, general 
shape and size of the individual bones of the skull, shape of the scapula, ete., there 
is no clear indication of specific differences. Cope’s suspicions that the Ocean City, 
New Jersey, specimen represented a species intermediate between . physalus and 
B. musculus are not confirmed. 
Viewing the present evidence as a whole there appears to be no reason for 
separating the American Sulphurbottom from B. musculus (1). 
THE REPRESENTATIVE OF B. MUSCULUS (1) IN GREENLAND WATERS. 
As mentioned on a previous page, Robert Brown and others assert that the 
Greenlanders recognize two or more species of large Finbacks under the name of 
Tunnolik. Fabricius (41, 35) identified the Zunnolik with B. physalus (L.) and 
gave a diagnosis and a few data regarding its habits and utilization. These stand- 
ing by themselves are insuflicient for the determination of the species and of no 
value in a case where the discrimination of closely allied forms is involved. 
Scoresby (84, 1, p. 481) mentions a “ Physalis found dead in Davis’ Strait,” 
which was 105 ft. long. Although the length is exaggerated, this specimen is prob- 
ably to be assigned to L. musculus, as he states that the color was “ bluish-black 
on the back and bluish-gray on the belly.” The data he gives are insufficient for 
a positive identification. 
In 1846 Eschricht (36, 373) published a description and measurements of a 
female Zunnolik stranded at Godhavn, August 12, 1848, which account he obtained 
from H. P. C. Méller who examined the specimen. Mbller’s description contains 
the following data: 
Body more elongate than in Lalena mysticetus, Megaptera longimana, or 
Balenoptera acuto-rostrata. 
Fore part of body thick and heavy; hind part slender and thin, much com- 
pressed, 
Color black throughout, or possibly hghter under the posterior part of the 
body; within folds of the skin, ¢.g., about mamme, or genitals, dark mouse-gray. 
Pectorals white below. 
Upper jaw a foot shorter than the lower. Lower jaw with a rounded terminal 
protuberance and faint median keel. 
Baleen very short and proportionately very broad. 
