1864. ] DR. J. E. GRAY ON A NEW WHALE. 991 
B. The neural arch low, scarcely raised, keeled on the upper edge ; 
the lateral processes very wide, occupying nearly the whole side- 
edge of the body of the vertebra. Catodontide. Catodon. 
In Balena the atlas is united to the other cervical vertebree. The 
atlas has a nearly circular body, with the lateral process on the upper 
part of the lateral edge; the process has a straight upper edge and 
a slanting lower one, gradually shelving down towards the lower 
part of the side of the body of the vertebra, where it is confluent 
with the upper part of the base of the large, thick, lower lateral 
process of the second cervical vertebra. 
The upper lateral process of the second vertebra is large and weu 
developed, bent forwards at the end, coherent with the outer end of 
the upper part of the lateral process of the atlas. 
The upper lateral processes of the third and succeeding vertebre 
are similar, but smaller, and united at the end to the upper process 
of the preceding cervical vertebree. The lower lateral processes are 
less developed, and they are unfortunately imperfect in the specimen. 
The atlas and other cervical vertebree of the Layenocetus latifrons 
are all united into a single mass. The body of the vertebre is 
nearly circular, with a very large superior conical process formed of 
the united neural arches ; and on the lower part of each side, on a 
level with the lower edge, are two large, thick, conical processes, 
formed of the lateral process of the atlas united to the lower lateral 
processes of some of the other cervical vertebre. 
The upper lateral processes seem to be scarcely developed, as the 
mass shelves down above towards the lower edge, and has on its 
upper part a series of perforations on each side, showing the axes of 
the nerves and vessels between the united vertebre. 
The cervical vertebree of a Balena in the British Museum, that 
was dredged up at Lyme Regis, are united together not only by the 
bodies of the vertebree, but by the neural arches, which form a large 
vaulted arch, and by the lateral processes. 
The lateral processes of the atlas are large, they arise from the 
exterior side of the articular cavity, the edge of the upper side being 
on a level with the top of the concavity, and the blunt end is rather 
curved up; the underside gradually shelves from the blunt outer 
end to the lower margin of the articular cavity. 
The upper lateral processes of the second, third, fourth, fifth, 
sixth, and seventh cervicals are all united together at the ends, the 
process of the second vertebra being the thickest, largest, and bent ; 
it is united to the hinder surface of the end of the lateral process of 
the atlas by a thick osseous band. The upper lateral processes of 
the third, fourth, fifth, sixth, and seventh are thinner and smaller, 
diminishing in size as they proceed backwards; the process of the 
third is directed backwards to meet the end of the fourth—which, 
like those of the fifth, sixth, and seventh, is directed rather for- 
wards, towards the head. 
The lower lateral process of the second vertebra is very large, thick, 
confluent with the lower part of the lateral process of the first ver- 
