1864.] IN THE MUSEUMS OF HOLLAND AND BELGIUM. 419 
upper and lower transverse processes are not united at their ends in 
any of them; but in the axis the union is almost complete. 
There is also a skull, 3! 8" long, of a younger specimen of this 
species. 
The skeletons of the Delphinoidea include a very fine perfect 
adult Hyperoodon rostratum, 24' 4" long, of which the cranium is 
5! 4!', The vertebral formula is C. 7, D. 9, L. 8, C. 20=44. Ribs 
9 pairs. One of the sharp-pointed teeth is left ix situ at the end of 
the lower jaw, nearly covered by the dried gum. Also Orca gla- 
diator (adult), Globiocephalus svineval (two adult and one feetal), 
Lagenorhynchus albirostris, Delphinus eschrichtii and D. guianensis 
(Van Beneden, Mém. de!’ Acad. Roy., coll. in-8vo., tome xvi., figure), 
Beluga leucas, Monodon monoceros, and Phocena communis. Of the 
last-named there are several specimens, including two beautifully 
prepared foetal skeletons. Among the collection of crania is the 
unique Ziphius indicus, Van Beneden (Mém. de I’ Acad. Roy., coll. 
in-8vo, tome xvi., figure). 
Tn conclusion, it may be useful to put down a list of the different 
species above noted, arranged systematically, with an indication of 
the collections in which they are contained. 
Suborder BALZNOIDEA. 
Balena mysticetus.—Skeleton, Brussels. Skull, Leyden, 
Eubalena australis’—Skeleton, Leyden. Skull, Leyden. Skull, 
Louvain. 
Megaptera longimana.—Skeleton, Leyden. Skeleton, Brussels. 
Skeleton, Louvain. 
Physalus antiquorum.—-Skeleton, Antwerp. Skeleton, The Hague. 
Skull, Leyden. Skull, Louvain. 
Physalus latirostris.—Skeleton, Utrecht. 
Sibbaldius laticeps——Skeleton, Leyden. Skeleton, Brussels. 
Stbbaldius schlegelii.—Skeleton, Leyden. 
Balenoptera rostrata.—Skeletons (two), Leyden. Skeletons 
(two), Brussels. Skeleton and skull, Louvain. 
DELPHINOIDEA. 
Hyperoodon rostratum.—Skeleton, Leyden. Skeletons (two), 
Brussels. Skeleton, Louvain. 
Mesoplodon sowerbiensis.—Skeleton, Brussels. 
Ziphius indicus.—Skull, Louvain. 
Globiocephalus svineval.—Skeletons (two), Leyden. Skeleton, 
Brussels. Skeletons (two adult and one young), Louvain. 
Orca gladiator.—Skeletons, Leyden, Brussels (two adult and 
young), Louvain. 
(Specimens of the genera Delphinus, Lagenorhynchus and Phocena 
not always noted.) 
Beluga leucas.—Skeletons, Leyden, Brussels, Louvain. 
Monodon monoceros.—Skeletons, Leyden (male aud female), Brus- 
sels, Louvain. ; 
It is remarkable that, in all these fine collections, that genus of 
