512 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 25, 
In the ‘ Bulletins of the Belgian Academy for 1867, vol. xxiv. 
p. 566, the Vicomte Du Bus describes this form, a fragment of the 
tusk of which Prof. Van Beneden showed me from the Diestien beds 
in 1864, as Alachtheriwm Cretsii. The description is short, and no 
figure is given; my Z'richecodon is, however, clearly the form de- 
scribed, and the name T’richecodon Hucleyi has precedence by three 
years. 
2. Teeth of Ziphioids. Abundant in all collections ; species un- 
determined. 
3. Teeth of other large Cetaceans ; undetermined. 
4, Har-bones of Balena and other Cetaceans, including Delphinus, 
not determined satisfactorily. Specimens of great beauty are in 
Mr. Whincopp’s collection, and would admit of identification. 
5-12. Rostra of Belemnoziphius, seven species named. Besides 
those with MS. names in the British Museum, the collections of Mr. 
Whincopp, Mr. Canham, and Mr. Baker contain specimens (especially 
the first-named collection) which probably belong to yet other 
species, and are more perfect than those which have been named. 
13. Rostra of Choneziphius planirostris, Cuvier. A fine specimen 
in Mr. Whincopp’s collection ; one in the possession of Mr. Calvert, 
of the Strand; two fragments in the British Museum. 
14. Rostrum of Choneziphius Packardi, Lankester, in the Ipswich 
Museum ; also a less perfect Choneziphius in my collection, perhaps 
Ch. Cuviert of Owen. 
15 and 16. Teeth of Delphinus. A few in the three principal 
collections, of probably two species. 
17. Squalodon. Long cylindrical teeth, probably referable to this 
genus, are in collections (see fig. Geol. Soc.). A single foliaceous 
tooth (of the Zeuglodont type of Owen), undoubtedly belonging to 
Squalodon, probably S. antverpiensis, is in the Rey. H. Canham’s 
collection. 
EXPLANATION OF PLATES XXXIII. & XXXIV. 
[ All the figures, excepting those of Choneziphius, are of the natural size.) 
Pruate XXXII. 
Figs. 1-4. Four views of the rostrum of a new Ziphioid Cetacean (Choneziphius 
Packardi) from the Suffolk Bone-bed, near Felixstow, in the Ipswich 
Museum, presented by Mr. Cobbold. The figures are reduced to one- 
fourth the natural size, linear; consequently they do not give an 
adequate notion of the large bulk and solidity of the specimen, which 
measures 163 inches in length. é 
Fig. 1, viewed from below; fig. 2, viewed from above; fig. 3, viewed 
from the right side; fig. 4, viewed from behind. 
v ¢, primitive trough-like cavity of the vomer; /g, left groove of 
the dorsum; 7g, right groove of the dorsum; «7g, expansion of the 
right groove of the dorsum; sJ, superior lateral canal (one on either 
side) ; 27, inferior lateral canal (one on either side). 
Figs. 5 & 6. Third upper premolar of the right side of Hyena antiqua, from the 
Suffolk Bone-bed, in the collection of Mr. Baker, of Woodbridge. 
(Compare the figures of the two other specimens in the ‘ Annals and 
Magazine of Natural History’ for 1864, ser. 3, vol. xiii. pl. viii., and 
vol. xiv. pl. viii.) 
