1864.] | IN THE MUSEUMS OF HOLLAND AND BELGIUM. 409 
Of Balenoptera rostrata there are two specimens, but neither of 
them yet articulated. The first is young and not very perfect ; it 
formed part of the old anatomical collection of the University. The 
second and third cervical vertebrae are ankylosed by their arches ; all 
the rest are free; the transverse processes are not fully developed. 
The second is a fine perfect skeleton of an adolescent individual 
obtained more recently from the Norway coast. The cervical ver- 
tebree are all free from each other; the upper and lower transverse 
processes fully developed; those of the axis and the sixth vertebra 
united together on both sides ; the others all separate. A small tu- 
bercle represents the inferior transverse process on both sides of the 
body of the seventh vertebra. 
The wealth of the collection of Cetacea in the Leyden Museum 
may be judged of when I mention that, in addition to the above, 
there are mounted skeletons of a very fine adult Hyperoodon, 23 feet 
long, a Grampus (Orca gladiator), two Globiocephali, a Beluga, 
two Narwhals, male and female, three examples of De/phinus tursio, 
eleven skeletons of smaller species of Dolphins, and a considerable 
series of skulls of members of this family. 
In December 1841 a male Fin-Whale about 40 feet long was 
stranded at Katwijk-aan-Zee, six miles from Leyden. Dr. Schlegel 
gave a figure and description of its external characters, with some 
notes on its anatomy, in the second -part of his ‘ Abhandlungen.’ 
The skeleton passed into the hands of a person at Scheveningen, at 
which place it was for some time exhibited. As the rare opportunity 
here offered, of being able to connect a detailed and truthful account 
of the external appearance with the osteology of the same individual, 
I was highly desirous of making an examination of this specimen. 
It had been moved from Scheveningen ; and it was not until after 
considerable trouble that I discovered the skeleton packed away in 
boxes in a store-room in the roof of a house at the Hague. I was 
enabled, however, to make some notes, though circumstances did not 
permit a very careful examination. This is less to be regretted, as 
I trust that by this time it has been transferred to a more appropriate 
resting-place in the Leyden Museum. 
The skeleton was evidently that of a very young individual of the 
genus Physalus, agreeing in every particular, as far as I could ascer- 
tain, with P. antiquorum. The bones were spongy, and the epi- 
physes on the limb-bones and vertebre all non-united, even that on 
the hinder surface of the axis. The skull was about 9 feet long ; 
the nasals were deeply excavated ; the orbital process of the frontals 
narrowed at the extremity. The lower jaw had a considerable curve, 
and a long coronoid process. As mentioned by Schlegel, the verte- 
bral formula was C. 7, D. 15, L. 14, C. 24=60. The form of the 
atlas and of the bodies of the cervical vertebree were as in Physalus 
generally ; the transverse processes were not developed, being in fact 
mere stumps. The upper and lower processes were not united even 
in the axis. The lower process of the fifth very short. Ribs, 15 pairs ; 
the first with a simple head. Sternum small, undeveloped, with 
two broad lateral lobes at the auterior part, and a deep notch between 
