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. x>hysalus I have examined, but 

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

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

 Lilljeboi'g's measurements are as follows : 



BAL^NOPTEBA FHYSALUS. GREENLAND. SKELETON. 



Measurement. 



Length of skeleton 



" " mandible 



Periphery of mandible at the middle 



Length of body of first lumbar 



Breadth of body of first lumbar 



Length of transverse process of first lumbar 



" " body of fifteenth lumbar 



Breadth of body of fifteenth lumbar 



Length of body of first caudal 



Breadth of body of first caudal 



Length of body of third caudal 



Breadth of body of third caudal 



Length of transverse process of third caudal 



Breadth of transverse process of third caudal 



Distance between outer angles of processus obliqui of third caudal 

 Length of neural spine of third caudal 



" " body of fifth caudal 



Breadth of body of fifth caudal 



Length of last caudal 



" " sternum 



Breadth of sternum 



Length of first rib 



" " scapula from glenoid cavity to theopposite upper border 



Breadth ditto 



Length of acromion 



" " humerus 



" " ulna to tip of olecranon 



" radius 



" " one pectoral limb from head of humerus 



OPINIONS OF EUROPEAN CETOLOGISTS REGARDING THE OCCURRENCE OF D. PHYSALVS IN 



AMERICAN WATERS. 



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

 that Cope's Sihhaldim teciirostris is probably the same as B. physalm (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. 



