E. T. Newton— Vertebrata of the Forest-bed. 149 
larger than the corresponding one in Tursiops tursio; but smaller 
than that of Globicephalus melas, Pseudorca or Monodon. It agrees, 
however, so nearly in size and shape with the fifth or sixth caudal 
vertebra of the White Whale (Delphinapterus leucus), that I feel 
justified in placing it in that species. 
Mr. Savin has another vertebra from the “ Forest Bed” of Over- 
strand which, although much damaged, is evidently from the lumbar 
region, and has on the under surface two distinct, oblique grooves, 
similar to those seen in the White Whale; but which I have been 
unable to find in any other Cetacean skeleton of a corresponding 
size. This vertebra is also referred to D. leucus. 
A Cetacean vertebra in the Owles collection, British Museum (No. 
46,290) dredged in the North Sea has been placed in this species by 
Mr. R. Lydekker (Cat. Foss. Mamm. Brit. Mus. part v. p. 79), 
but this is probably of more recent origin, as pointed out by my 
friend Mr. W. Davies (Grou. Maa. Dee. II. Vol. V. p. 97, 1878). 
At the present day the White Whale is an inhabitant of the Arctic 
seas, although it has occasionally been met with on the north British 
coasts. 
Phocena communis, Lesson (Porpoise). Plate V. Figs. 4, 4a. 
I have now to call attention to a caudal vertebra of a small 
Cetacean from the “ Forest Bed” of Sidestrand. It is of similar 
size to that of the Dolphin, a species already recorded from these 
beds, but its proportions are different. The neural arch and 
transverse processes are broken away; but the epiphyses are firmly 
united and the sutures obliterated. The vertical vascular canals 
pass through the bases of the transverse processes, and are similar to 
those of the caudal vertebra of the White Whale described above. 
The faces of the centrum are nearly round and flat, with only a 
slight concavity in the middle; the height and width being each 
about 86 mm., while the length of the centrum is about 33 mm. or 
nearly equal to the width. This proportion of length to width is 
quite unlike what is found in the Dolphin, but agrees with that 
seen in the Porpoise; and indeed the agreement of this specimen 
with the fifth or sixth caudal vertebra of Phocena communis is 
sufficient to justify its reference to that species. 
The Porpoise is now living in the North Atlantic and is common 
around the coasts of Great Britain. 
EXPLANATION OF PLATE V. 
All specimens from the ‘‘ Forest Bed Series ” and in Mr. Savin’s Collection at Cromer. 
Fig. 1. Cervus rectus, n. sp. Right antler and frontal, from Sidestrand; front view. 
Fig. la, Cervus rectus, side view. 
Fig. 16. Section of antler. 
Fig. 2. Phoew barbata, Fabricius, Left humerus, from Overstrand, inner side. 
Fig. 2a. Phoca barbata, front view. 
Fig. 3.  Delphinapterus leucus, Pallas. Caudal vertebra (5th or 6th), from East 
Runton ; side view. 
Fig. 3a. Delphinapterus leucus, front view. 
Fig, 4, Phocena communis, Lesson. Caudal vertebra (5th or 6th), from Side- 
strand ; side view. 
Fig. 4a, Phocena communis, front view. 
