BY H. H. SCOTT AND CLIVE E. LORD, 



15 



large, well rounded bosses, even in immature skulls, but 

 in Pseudorca they are small, and are closely associated with 

 the frontal^ — and we strongly suspect in old skulls would 

 ankylose tO' extinction with the frontals. 



In point of comparative sizes, it may be said — An 

 immature Glohicepliahia. whale, in whose skeleton the 

 epiphvses are quite free. Mall have a skull as large as that 

 of an adult Pseudorca, in which all the vertebral epiphyses 

 are ankylosed to extinction. 



As has been pointed out, in the introduction to the 

 osteology of the Orcas' skull, in the Museum collection, 

 many valuable cetaceian remains have been rejected in 

 past years, and as the skulls belonging to Dr. Crowther's 

 specimens were too large to store in the cases that car- 

 ried the skeletons, they were either put on view in the 

 Museum, as detached exhibits, or els© stored at the back 

 of the Museum (somewhat exposed to the weather!). 

 In this way, the skull of the matured female of Crowther's 

 donation became lost, and the matured male's skull was 

 disassociated from its skeleton, and the same happened 

 with the immature skull. Both of the latter have now 

 been restored to their respective skeletons, and a third (old 

 male) non-associated skull has been brought to light. As 

 a result therefore of this confusion the adult female of 

 Crowther's donation is minus its skull, while a spare male 

 skull is available. The following table will show the com- 

 parison between the two adult male skulls, and that of 

 the immature Glohicephalus. 



Comparative skulls of Glohicephalus 

 In the collection of the Tasmanian Museum, Hobart. 



Eather mutilated. 



