Mr. J. E. Gray on the British Cetacea. 88 



mals/ collected together the best materials for the details of the 

 species, but he made no attempt at revising their arrangement. 

 If I have been under the necessity of reducing some of the larger 

 species, I have been enabled to add three new species, two of 

 which are types of distinct genera. 



Fam. I. BALiENiD^, 



1. Balcena Mysticetus, Linn. 



2. Megaptera longipinna ; Balana longipinna, Rudolphi ; The 

 Whale, Johnston, Trans. Newcastle N. H. Soc. i. t. 1. 

 Coast of Northumberland. 



3. Balcmoptera Physalus ; Balana Physalus ; B. Musculus and 

 B. Boops, Linn. S. N. ; B. rostrata, Miiller; Rorqual de la 

 Mediterranee, Cuvier, Oss. Fos. 



The three Linnsean species were established on three plates, 

 one by Martens and the others by Sibbald ; Martens' appears to 

 differ from Sibbald's in the imperfection of the figure and descrip- 

 tion, and Sibbald's from one another in the state of the animal 

 when figured, one having the throat dilated by the accumulation 

 of gas beneath the tongue and the other not. 



There is a second species of this genus found on the Dutch 

 coast, which has the upper jaw nearly as wide as the lower. I 

 have no doubt it visits us occasionally ; it is the B. Boops of 

 Rudolphi and the Rorqual du Nord of M. Cuvier, Oss. Foss. 



Fam. II. CATODONTIDiE. 



4. Catodon macrocephalu^, Linn. ? O. Fabricius. 



5. Physeter Tursio, Linn. 

 Scotland, Sibbald. 



Cuvier denies the existence of this species, and Mr. Bell hag 

 overlooked the excellent figure of it in Sibbald, ' Phal.' 1. 1, f. a, 

 which represents it j^nd of its natural size. It is well known to 

 whalers as the black fish. 



Fam. III. Delphinid^. 

 6» Hyperoodon Hunteri, Hunter, Phil. Trans. Ixxvii. t. 19, with 



the dorsal fin behind the middle of the back. 



We have a head of this genus in the Museum, from the Ork- 

 neys, four times as large as Hunter's specimen : the elevated crests 

 of the maxillary bones are thickened, so that their inner surfaces 

 nearly touch in front of the blower. I suspect it may be a di- 

 stinct species. 



7. Hyperoodon Butzkopf, Lacep., Dale's Harwich, t. 14, with 

 the dorsal fin on the centre of the back. 



