52 Dr. H. Burmelster on his so-called Globiocephalus Grayi. 



witli those of the '■ Ost^ogr. d. Cetaces/ pi. 50, published by 

 himself two years ago. 



As the sixth part of my ^Anales,' wherein is to be found the 

 description of Glohiocephalus Grayi^ was published in the year 

 1869*, I could not compare the excellent figures of the 'Ost^o- 

 graphie' during the elaboration of my treatise, because the part 

 of M. Gervais's work alluded to did not reach Buenos Ayres 

 until Sept. 1870. I had at hand no other scientific works than 

 Cuvier's ' Ossemens Fossiles ' and Gray's '■ Catalogue of Seals 

 and Whales,' as I have already said in the ' Anales,' p. 369. 

 Even Prof. Reinhardt's extended description was not known 

 to me until after the printing of my '■ Anales.' Occupied 

 with the elaboration of the following parts, I could not find 

 time to compare my previous labours with the new publi- 

 cations ; and although, in Sept. 1870, I had seen the cited 

 figures of M. Gervais, and recognized my error, I could not at 

 once undertake the careful comparison of them with my own, 

 as I was so much engaged with other labours which it was 

 necessary, for various reasons, to complete. But now the 

 criticism of M. Gervais has obliged me to do what I have 

 hitherto neglected, to compare the cranium of Glohiocephalus 

 Grayi in our museum with the figui-es of his work, and to 

 publish the results of this comparison. 



From my new examination there can be no doubt that my 

 Glohiocephalus is a true Pseudorca j but I am also convinced 

 that the species from Buenos Ayres is not identical with Ps. 

 crassidenSy but a new one, more nearly allied to Ps. meridionalts^ 

 Flower (Proc. Zool. Soc. 1864), than to the species of the Euro- 

 pean seas. My opinion is founded on the following reasons : — 



1. The whole skull is narrower before than that of Ps. 

 crassidens, and resembles more in the general figure that of 

 Ps. meridionalisj with the exception of the tip of the muzzle, 

 which is somewhat broader in my skull, and more nearly 

 allied in its form to that of Ps. crassidens. 



2. The right intermaxillary bone is much longer posteriorly 

 than the left, surrounding there the outside of the nasal bone, 

 nearly in the same manner as in Gervais's fig. 1 . pi. 50. This 

 character is not well indicated in my fig. 3. pi. 21, because the 

 tip of the right intermaxillary bone of my skull has been 

 broken off, which I had not noticed before I saw the figures 

 in the ' Ost^ographie.' 



3. The two small faces of the maxillary bones, immediately 

 before the nostrils, are of the same unequal size as in Ps. me- 

 ridionalisy the right being larger and broader than the left. 

 In Ps. crassidens both are smaller and of nearly equal size. 



* The copies of this part of my ' Anales ' were sent from here to London 

 Oct. 25, 1869, and to Paris Nov. 12, 1869, by the post-steamers. 



