29 



process, which no doubt is the coracoid. The great size and 

 the form of the acromion process agrees better with the struc- 

 ture of true whales J than with that of dolphins.* The fol- 

 lowing are the dimensions of the right scapula : — 



Lengtli from upper part to glenoid cavity 

 Breadth of upper part 



„ narrowest part 



,, lowest part 



Lengtli of acromion process 



Breadth of ditto , 



Length of coracoid process 



Breadth of ditto 



Length of glenoid cavity , 



Breadth of ditto 



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

 nearly half the length of the scapula, and consequently in 

 proportion 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 hu- 

 merus expands very much at its carpal end, where it articulates 

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

 whale the radius and ulna were ossified to the humerus. The 

 following are the dimensions of the humerus in our Sydney 

 specimen : — 



Whole length of humerus . 



Breadth of head 



Breadth of narrowest part . 



Circumference of ditto 



Breadth of extremity 



* On comparing the figure of the scapula of our Sydney whale with that 

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

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



