29 



triangular and bluut-headed process, representing the acromion ; 

 while the other margin lying close to the ribs, and where the 

 scapula articulates with the humerus, projects forward in the 

 form of a moi-e stylifoi^m and pointed process, which no doubt is 

 the coracoid. The great size and the form of the acromion pro- 

 cess agrees better with the structure of true whales, than with 

 that of dolphins.* The following are the dimensions of the right 

 scapula : — 



Length from upper part to glenoid cavity 

 Breadth of upper part , 



, , narrowest part 



,, lowest part 



Length of acromion process 



Breadth of do 



Length of coracoid process 



Breadth of do 



Length of glenoid cavity 



Breadth of do 



With respect to the very short thick humerus, it is very 

 nearly half the length of the scapula, and consequently in pro- 

 portion to the scapula not so long as in the Yorkshire whale 

 On the opposite side to the head of the animal, there is a short 

 and thick apophyse, so that the external side of the humerus 

 presents a strong notch or emargination. This humerus expands 

 very much at its carpal end, where it articulates with the radius 

 and ulna. Beale says that in the Yorkshire whale the radius 



'■ On comparing the figure of the scapula of our Sydney whale with that 

 given by Cuvier of his London whale, a great difference may be discovered 

 in the general form, and particularly in that of the acromion. 



