148 E. T. Newton— Vertebrata of the Forest-bed. 
Phoca barbata is found living at the present day in the more 
northern parts of the Atlantic and in the Arctic Seas. Although 
the species has been recorded as British, yet, according to Bell 
(British Quadrupeds, second edition, 1874, p. 238), it seems to be 
very doubtful whether the species has ever been found living on the 
coasts of Britain. The skeleton in the British Museum is said to 
have come from the North Sea. 
Monodon monoceros, Linn. (Narwhal). 
The occurrence of the Narwhal in the “ Forest Bed” was noted 
in the Survey Memoir, a portion of a tusk in the Norwich Museum 
having been identified. It is satisfactory, however, to be able to 
confirm this identification by a specimen of peculiar interest from 
the “ Forest Bed” of Overstrand, near Cromer, now in the possession 
of Mr. Savin. It is well known that the male Narwhal has, as a 
rule, only one large tusk developed, and this on the left side; the 
right one being aborted and so small as to be entirely buried in the 
bones of the snout. Mr. Savin’s specimen is a portion of the right 
side of a Narwhal’s skull, which having been broken open, shows 
the hinder half of the aborted tusk in situ. This portion of tusk is 
140mm. in length and 25mm. in diameter. The hinder end is 
curved inwards, as in some recent specimens, and the pulp cavity 
is entirely obliterated by a deposit of irregular dentine, which forms 
a globose mass at the base of the tusk. 
Delphinapterus leucus, Pallas (Beluga, or White Whale). Plate V. 
Figs. 3, 3a. 
To this genus and species is referred a fifth or sixth caudal 
vertebra from the “Forest Bed” of Hast Runton, which is more 
nearly perfect than most of the Cetacean vertebree from these beds. 
The terminal epiphyses are wanting and the ends of the transverse 
processes are somewhat broken, but the forms of the centrum and 
neural arch are well preserved. The greatest height of the 
specimen, including as much of the neural spine as is present, is 
113 mm.; the front surface of the centrum is slightly hollow and 
shows distinctly the radiating ridges from which the epiphysis has 
separated ; it is about 76 mm. high and 68 mm. wide. The hinder 
surface is slightly convex and is rather smaller than the front. ‘The 
ereatest length of the centrum, in its present condition, is about 
55 mm., so that with its epiphyses its length must have been nearly 
if not quite equal to its width. 
The transverse processes are a little below the middle of the 
centrum, and their bases, or rather the sides of the centrum at their 
bases, are each pierced vertically by a large vascular canal, which 
is rather nearer the back than the front of the centrum. Immediately 
below the lower opening of each of these canals is another which 
passes obliquely through the lower part of the centrum and enters 
the hemal groove, seen on the lower surface of the specimen. 
Having compared this vertebra with the specimens in the Royal 
College of Surgeons and in the British Museum, I find it to be 
