PROFESSOR FLOWER ON RISSO’S DOLPHIN. a) 
the latter only imperfectly joined to the fifth. The bodies of the remainder are com- 
pletely consolidated together. ‘The spines of all seven are joined into a single conical 
mass, flattened in front, and compressed from side to side posteriorly. Indistinet traces 
of their original individuality may be seen on the sides of the lamine. ‘The pedicles of 
the arches are all distinct, with interspaces for the passage of the nerves; but, with the 
exception of the first and seventh, they are scarcely thicker than pieces of cardboard. 
There is no foramen in the arch of the atlas for the passage of the suboccipital nerve, 
but merely a shallow groove. The transverse process of the atlas is directed nearly 
straight outwards, is stout, somewhat flattened from above downwards, and rounded at 
Fig. 2. 
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Side view of cervical vertebra. 
Anterior surface of cervical vertebrae. 
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the extremity ; that of the axis forms a small but distinct tubercle, projecting somewhat 
backwards from the middle of the transverse process of the atlas; that of the seventh is 
long and slender, inclining forwards and downwards, its apex being but 0-2 of an inch 
behind the end of the transverse process of the axis, and extending as far laterally. 
The transverse processes of the intervening vertebre are but slight triangular projections 
from the roots of the flattened pedicles of the arches. The side of the body of the 
seventh vertebra has a well-marked articular surface, which receives the head of the 
first rib. Slight rough elevations on the bodies of the vertebre in front of this, and 
at a lower level, are all the indications shown of the inferior transverse processes 
so commonly met with in this region in the Cetacea. The dimensions of these 
vertebrae are’ :— 
1 The cervical yertebre most closely resemble those of Grampus griseus figured by Van Beneden and Gervais 
(Ostéographie des Cétacés, pl. 54. figs. 8 & 8a). 
