BY H. H. SCOTT AND CLIVE E. LORD. 11 



obtrude 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 Pseudorca, this latter whale followed the Orca, and 

 not Glohiceiyhalus in this respect, in any ca-se it certainly 

 followed Orca in having fairly extensive palatine moieties 

 instead of the palatal bones being reduced to the merest 

 strips as in GlobicejjJwhis. This character alone is Siuffi- 

 cient to quickly separate skulls of Pseudorca from those 

 of GlohiocephaJ'US. 



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

 is an extremely well prepared Jipecimen, evidently cleaned 

 under Doctor Ctowther's strictest instructions — the teeth 

 are 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 axea left open 

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

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

 sembles the one just passed in review, but as it is in much 

 better condition the table of measurements appended was 

 compiled from, it, and not the skull with the associated 

 appiendicular bones. 



Skixll of an Orca, presented by Dr. W. L. Cro\7ther, 

 F.R.C.S. 



Plate II. 



ft. m. 



Total length ... 3 1^: 



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 from par-occipitals to vertex 1 5-i 



Greatest width of palate inside teeth 10^ 



(Midway between the last two) 



Width at seventh pair of teeth 9^ 



Total length of tooth line 1 1| 



Width of pterygoids ... 6^ 



Tips of pterygoids to the occipital condyles 1 1-^ 



Width of fossa temporalis 6 



Height of fossa temporalis ••• ^\ 



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



Total length of malar bone 11 J 



Diameter of blowers taken from the palatal aspect 



— ^antero-posterior measurement 4^ 



Transverse measurement ^% 



