BY H. H. SCOTT AND CLIVE E. LORD. 9 



Pseudorca crassidens. 

 Comparative meastirements of the Tasmanian and 

 North Sea spe'cimens. 



— Skeletons. — 



OECA GLADIATOR. 



(Orca cajjensis.) 



Plates II., III., IV., V., VI., VII., VIII. 



Fcr detailed synonymy see: — 



Gray, B.M. Cat. Seals and Whales (1866), p. 278-290. 



The prevailing opinion seems to favour the reduction 

 of the representatives of this genus tO' one species — Orca 

 gladiator. We have adopted this view and made Orca 

 capensis a synonym of Orca gladiator. Should, however, 

 capensis be again raised to speicific rank we are of opinion 

 that the Tasmanian forms should be included, as they 

 a.ppear tO' have the characters at one time allotted to 

 capensis in order to separate it from gladiator. We formed 

 this opinion after comparing the Tasmanian skulls with the 

 figured ones of Orca capensis reproduced by G-ray in the 

 Zoology of the Voyage of the Erebus and Terror. (Plate 

 IX.) _ , 



Unfortunately portions of the skeleton exa.mined by 

 us had disappeared. This is greatly to be regretted, es- 



(10) In this articulated skeleton (Plate I.), t}ie_ intervertebral pads are 

 thick, in fact exceptionally so, and if this excess is allowed for, 

 the two skeletons are of almost similar length. 



