EXPLANATION OF PLATES. 



PLATE L— Fig. 1. Skeleton oi Catodon Au'ifraUs SiS set n]). 



Fig. 2. Six bones which compose the sternum of same. 



Fig. 3. Os hyoides, where the dotted lines denote the cartilage 



that connects it with the styloidean processes. 

 Fig. 4. Bones of the pelvis, as found in the carcass of another 



sperm whale, cast up between Botany Bay and 



Port Hacking. 



PLATE II. — Fig. 1. Skeleton of Euphysetes Grayii, as set up. 

 Fig. 2. Upper side of skull of same. 

 Fig. 3. Under side of skull of same. 

 Fig. 4. Occipital view of skull of same. 

 Fig. 5. Under jaw of same. 

 Fig. 6. Pelvis of same. 



