Mr. J. E. Gray on the British Cetacea. 83 - 
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. BaLanipa. 
1. Balena Mysticetus, Linn. 
2. Megaptera longipinna; Balena longipinna, Rudolphi; The 
Whale, Johnston, Trans. Newcastle N. H. Soe. i. t. 1. 
Coast of Northumberland. 
3. Balenoptera Physalus; Balena Physalus; B. Musculus and 
B. Boops, Linn. 8S. N.; B. rostrata, Miiller; Rorqual de la 
Méditerranée, Cuvier, Oss. Fos. 
The three Linnzan 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 Me Cuvier, Oss. Foss. 
Fam. Il. Caropontipa. 
4. Catodon macrocephalus, Linn.? O. Fabricius. 
5. Physeter Tursio, Linn. 
Scotland, Sibbald. 
Cuvier denies the existence of this species, and Mr. Bell has 
overlooked the excellent figure of it in Sibbald, ‘ Phal.’ t. 1. f. a, 
which represents it nd of its natural size. It is well known to 
whalers as the black fish. 
Fam. II]. Deteuinip2z. 
6. Hyperoodon Hunteri, Hunter, Phil. Trans. lxxvii. 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, Lacép., Dale’s Harwich, t. 14, with 
the dorsal fin on the centre of the back. 
