118 



THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



BALMNOPTERA PHYSALUS (L.). EUROPE. (Continued.) 



Leaving out of consideration all immature specimens, or those below 56' 3", 

 the following represent the average percentages for different dimensions in American 

 and European specimens respectively : 



BALJSKOPTERA PHYSALUS (L.). AMERICAN AND EUROPEAN. 



Measurement. 



Per Cent, of Total Length. 



"Straight. 2 French measure. 3 To center of blowhole = 18.1$. 



4 The head measurements appear to have been taken from the plate, in which the head is too small. 



s I suspect that measurements are from the plate (Neu. Nederl. Verhandl., I cl., 3, 1831, pi. l). The eye is 

 obviously too far forward. ' To axilla = 33.5 %. ' From figure. 8 From tip of lower jaw. 



9 To middle of fin. lo From head of humerus. " Probably from the plate. The pectoral is too small. 



18 Back of pectorals. ' 3 At ^ the distance from back of dorsal to notch of flukes. 



"The anterior insertion of the dorsal fin in a foetus from Newfoundland (No. 14, 1901) is exactly opposite the 

 posterior end of the centrum of the first caudal vertebra. 



15 More or less uncertain, as the measurements in two or three cases are not given with exactness. 



