202 



THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



For a comparison of the proportions of the vertebrae there are unfortunately 

 no data of importance. The European skeletons of which measurements are avail- 

 able are all adult, while the Massachusetts skeleton is quite young. I have, how- 

 ever, assembled a number of measurements in the following table, both of the 

 vertebrae and of other parts of the skeleton : 



BAL&NOPTERA ACUTO-ROSTRATA LAC. EUROPEAN AND AMERICAN. SKELETON. 



In the foregoing table it will be seen that on account of difference of age only 

 Carte and Macalister's specimen is comparable with the Massachusetts skeleton. 

 Of the former, the measurements which can be used are, unfortunately, very few, 

 and these few do not all show agreement. The most notable discrepancy is in the 

 length of the radius and ulna. Carte and Macalister do not explain whether the 



1 Condylo-premaxillary. 



* Atlas = 19.2 <fa. 



* To condyles. 



4 Swedish measure. In straight line. 

 ' Atlas = 18.7 #. 



5 Posterior median. 



7 Anterior. 



' With proximal epiphysis. 



' Atlas. 



