THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



147 



are only very slightly keeled below. The number of chevrons cited by Lilljeborg 

 is two more than in any American specimen of B. physalus I have examined, but 

 Flower's Falmouth (Eng.) specimen had the same number as the Greenland 

 skeleton, as will be seen by reference to p. 139. 

 Lilljeborg's measurements are as follows : 



BALMNQPTERA PHYSALUS. GREENLAND. SKELETON. 



Measurement. 



ft. in. 



Length of skeleton 53 o 



" mandible 13' to 14' 



Periphery of mandible at the middle 2 3 



Length of body of first lumbar o 9 



Breadth of body of first lumbar o i if 



Length of transverse process of first lumbar i 2 



" " body of fifteenth lumbar o n-J 



Breadth of body of fifteenth lumbar ... i of 



Length of body of first caudal o n 



Breadth of body of first caudal i i 



Length of body of third caudal o 1 1 J 



Breadth of body of third caudal i oj 



Length of transverse process of third caudal o 5! 



Breadth of transverse process of third caudal o 6f 



Distance between outer angles of processus obliqui of third caudal o 4! 



Length of neural spine of third caudal o toj 



" body of fifth caudal o 1 1 j 



Breadth of body of fifth caudal i \\ 



Length of last caudal o i 



" " sternum i 3$ 



Breadth of sternum i 8 



Length of first rib 3 9^ 



" scapula from glenoid cavity to the opposite upper border 2 o 



Breadth ditto 3 7^ 



Length of acromion o ii 



" " humerus i 7^ 



" " ulna to tip of olecranon 2 4^ 



" radius 2 3 f 



" " one pectoral limb from head of humerus 6 i\ 



Greenland. 

 (Copenhagen Mu- 

 seum.) 1 



OPINIONS OF EUROPEAN CETOLOGISTS REGARDING THE OCCURRENCE OF B. PHYSALUS IN 



AMERICAN WATERS. 



In the Osteographie (8, 236) Van Beneden and Gervais express the opinion 

 that Cope's Sibbaldius tectirostris is probably the same as B. physahts (for which 

 they use the name B. musculus), but they had not seen the type, nor did they enter 

 into any discussion of the subject. In 1889, again, Van Beneden includes Green- 

 land in the range of this species, probably on the basis of the observations of Fa- 

 bricius (7, 224), and remarks, " various authors have reported it at New England," 

 referring doubtless to the observations of Dudley, Cope, and Allen. 



' Swedish measure. 



