BY H. H. SCOTT AXD CLIVE K. LORD. 11 



obtiTide upon the palate for three inches, out of a total 

 length of fourteen, and the vomer is continued outwards to 

 within two and a quarter inches of the tip of the beak. As 

 far as it is possible to determine from the articulated skele- 

 ton of Pseudorra, this latter whale followed the Orca, and 

 not (Jlobicepha/ift in this respect, in any case it certainly 

 followed Orra in having fairly extensive palatine moieties 

 instead of the palatal bones being reduced to the merest 

 strips as in (Thihiceplinlux. This character alone is suffi- 

 cient to quickly separate skulls of Paeudorca from those 

 •of Glohiocephahis. 



The second skull in the Museum collection (Plate II.) 

 is an extremely well prepared rpecimcn, evidently cleaned 

 under Doctor Crowther's strictest instinictions — the teeth 

 aro all in situ, the membrane of the hard palate having 

 been left for the purpose of their protection — nothing 

 could exceed this method of making a museum specimen, 

 as far as it relates to the teeth, but a central ai-ea left open 

 to reveal the vomer, and intermaxillarics, would be a de- 

 sideratum. In point of size, this second skull closely re- 

 sembles the one just passed in review, bxit as it is in mucli 

 better condition the table of measurements appended was 

 compiled from it, and not the skull with the associated 

 appendicular bones. 



Skull of an Orca, presented bv Dr. W. L. Cro\7ther, 

 F.R.C.S' 



Plate II. 



ft. in. 



Total length 3 Vi 



Width at maxillary notch 1 1;^ 



Width at pre-orbital process of the frontal ...... 2 2{ 



Width of maxillary at this point 1 10 



Height fi'om par-occipitals to vertex 1 5^ 



Greatest width of palate inside teeth lO.V 



(Midway between the last two) 



Width at seVenth pair of teeth 9^ 



Total length of tooth line 1 ^ 



Width of^ pterygoids 6;^ 



Tips of pterygoids to the occipital condyles 1 H 



Width of fossa temporalis ^ 



H"eight of fossa temporalis ••• 6^ 



(Both of the above taken from the palatal aspect.) 



Total length of malar bone 11^ 



Diameter of blowers taken from the palatal aspect 



— antero-posterior measurement ^\ 



Transverse measurement '^% 



