BY ir. II. SCOTT AND CLIVE K. L<VKI), 



15 



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

 in Pseudorca they are small, and are closely associatect Avith 

 I he f rentals — and we strongly suspect in old skulls would 

 ankylose to extinction with the frontals. 



In ]X)int of comparative sizes, it may be said — An 

 immature aJuhireiihnlnx. whale, in whose skeletoa the 

 epiphvse? are quite free, will have a skull as large as that 

 of an adult P'<eu(l()rca, in which all the vertebral epiphyses 

 are ankyjosed to extinction. 



As has been pointed out, in the inti-oductioii to the 

 oeteology of the Orras' skull, in the Museum collection, 

 many valuable cetacean remains have been rejected in 

 past years, and as the skulls belonging to Dr. Crowthers 

 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 else stored at the back 

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

 In this way, the skull of the matured female of Crowthers 

 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 thereforf^ of this confusion the adult female of 

 Crowthers 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 (jlofiicfphdJux. 



Comparative skulls of Chihireiilmlii'^ 

 Tn tile cfillcction of the Tasnianian Museum, llobart. 



' Bather iiiulilateil. 



