200 Dr. J. E. Gray on the Whales described 
Arctic seas; but we cannot be certain on this point, as no re- 
mains of any specimens so taken are known to exist. These 
charts, I need not observe, give no support to M. Van Beneden's 
theory of whales inhabiting bands across the different oceans. 
The whales of the North Atlantic, including the Mediterra- 
nean Sea, of which we have more or less reliable remains, are 
fivein number. "Thus on the east coast there are :— 
1. Balena biscayensis, Eschricht, which, I believe, is a 
Cuvierius with a double-headed first rib. 
2. Balena biscayensis, Van Beneden and Gervais—as distinct 
from B. biscayensis of Eschricht, resting on the mass of cer- 
vical vertebre tigured by Lacépéde. Whether this is a di- 
stinct species or only a variety of Balena mysticetus, there 
cannot be the slightest doubt of its being distinct from the 
following. 
3. Balena britannica, Gray, established on the mass of 
cervical vertebree which is inthe British Museum, before re- 
ferred to, and which was dredged off the coast of Lyme Regis. 
The processes ot the atlas and other cervical vertebree are much 
more like those of the Australian Black Whale (Macleayius 
australiensis), and are very unlike the vertebre of any other 
whale yet described; there is no doubt that they belong to a 
distinct species. 
On the west coast there are also two very distinct species, 
which are so distinct from one another that Cope refers them 
to two different genera, the latter genus belonging to a section 
of Balenide characterized by having the cervical vertebre 
free and only four fingers to the pectoral fin :— 
. Balena cisarctica, Cope, who believes it to belong to the 
genus Hubalena, and more allied to B. australis than to B. 
mysticetus ; and the description of the cervical vertebre at once 
separates it from the B. biscayensis of Van Beneden and Ger- 
which is not uncommon 
N. 5. Phil. 1868, p. 223). It is, indeed, remarkable that so 
curious a whale, forming quite a distinct family from Balena, 
of which there are a good many remains in America from 
which figures could be easily procured, is entirely left out in 
a work professing to give the osteology of the Cetacea! 
For the sake of the symmetry of the theoretical distribution 
of whales, it is necessary that there should be a species ex- 
