+ PROFESSOR FLOWER ON RISSO’S DOLPHIN. 
mottled border, which, again, was separated from the general dark colour of the surface 
by another white line, so that there were three white and two black lines, altogether 
nearly half an inch in width. In some places the central white line was absent; and 
then the marking showed only a dark centre, bordered by white. ‘There are also many 
round and oval patches of white, generally with a dark centre. On close inspection it 
was seen that these dark lines and patches were really formed by aggregations of 
minute black dots and fine linear streaks placed transversely to the main line, and that 
they depended altogether upon the disposition of the pigment in the cuticle, the peculiar 
coloration passing through its entire thickness. 
Nothing but the drawing can convey any idea of the extraordinary and irregular 
manner in which these markings were distributed. ‘Though there was a general corre- 
spondence between their arrangement on the two sides, there was no symmetry in detail. 
They were entirely absent from the dorsal, pectoral, and upper surface of the caudal fins, 
though on the under side of the right lobe of the latter were some broad, rather 
indistinct, white lines, parallel with the anterior border of the lobe, and following its 
curve. There were no corresponding markings on the other lobe. 
The viscera generally, as far as I had an opportunity of examining them, appeared 
closely to resemble those of Globicephalus. The stomach was nearly empty, containing 
only a little fluid, and in its last compartment a single crystalline lens, apparently of a 
small Cephalopod. 
Skeleton—The condition of the bones showed that the animal was adult but not 
aged: all the epiphyses of the limb-bones were completely united with the shafts ; and 
the disk-like terminal epiphyses of the bodies of the vertebra were likewise joined with 
the rest of the bone, with the exception of a few in the lumbar region, which still 
remained distinct. 
In general appearance the skeleton presents the same kind of resemblance to that of 
Globicephalus that the external figure of the animal does, the proportions of the dif- 
ferent regions of the trunk being very similar; but as the vertebrae are more numerous, 
especially in the lumbar region, they are individually shorter from before backwards. 
The spinous and transverse processes are also longer and more slender, approaching 
in this respect Delphinus and Lagenorhynchus, and deviating greatly from Orca and 
Pseudorca. 
The most noticeable peculiarity of the vertebral column, taken as a whole, is the very 
feeble development of the metapophyses. 
The total number of vertebre is 68, which may be divided into 7 cervical, 12 thoracic, 
19 lumbar, and 30 caudal’. 
The seven cervical vertebree are all firmly united together by the lamin of their arches 
and the spines; but the body of the seventh is quite distinct from the sixth, and that of 
* Exactly the same numbers as those found by Fischer in a specimen of Grampus griseus, stranded in 1867, 
on the west coast of France. (Annales des Sciences Naturelles, 5th ser. viii. p. 363, 1867.) 
