318 Proceedings of Boy al Society of Edinburgh. [sess. 
the University, which was transferred to the Government in 
1854, and is now incorporated in the Royal Scottish Museum, 
I have examined, along with Dr Traquair, the Keeper of the 
Natural History section, the specimens in the collection, hut could 
not identify Knox’s specimen. A skeleton marked Tursiops tursio 
is there; it is about 10 feet long, and is stated to have come from 
the Firth of Forth; its cranium was 2025 inches long and the 
beak was 9 -75 inches. Obviously the skeleton of tursio now 
in the Museum was not, either as regards dimensions or habitat, 
that of the dolphin prepared by the brothers Knox. 
The Anatomical Museum of the University has long possessed a 
skull, the skull-cap of which had been taken off and the brain 
removed ; the mandible was absent. Wires were attached to the 
basis cranii, which showed that it had at one time been articulated 
to the spine, but the rest of the skeleton was no longer attached 
to it and could not be found, neither was the skull labelled with 
.a name nor the locality where it had Ipeen obtained, so that no 
mark existed to enable one to identify it. The dimensions of the 
skull were, length 14*9 inches, length of beak 7*7, breadth of beak 
3*9, breadth of skull 8 inches. Its dimensions were slightly 
greater than in the Dunrobin dolphin, though the ossification in 
it was also incomplete. Its appearance both in profile and in the 
dorsal view of the beak was in close correspondence with the 
Dunrobin specimen. The proportion of beak to skull, the 
configuration of the maxillse and premaxillae, the form of the 
pterygoids, their relation to the palate, the want of symmetry of 
the anterior nares, the continuation of the mes-ethmoid into a 
medio-rostral cartilage, and the shape and size of the bi-lobed 
tympanic bullae, closely resembled each other in the two specimens. 
The teeth in shape and size were identical in both skulls, and twenty- 
nine were counted on one side projecting through the gum ; as the 
most anterior tooth was a little distance behind the tip of the beak, 
several were in all likelihood concealed in the dried gum. From 
its resemblance in size, form, and proportions, I concluded that 
it also was the skull of a Delpliinus acutus. From the brain cavity 
having been opened, and from the evidence of its having at one 
time belonged to an articulated skeleton, I think that possibly it 
was that of Knox’s Orkney specimen obtained in 1835. 
