Haast.—On a new genus of Ziphioid Whale. 458 
the sharp point of a tooth in each ramus of the lower jaw, when passing 
the finger over the gums, was discernible, but I doubt if this was to be felt 
before the gums were dried up. 
In eutting a portion of the gums away the apex of a very flat tooth, 
rather acutely triangular as far as visible, was exposed, which stands about 
one-eighth of an inch above the upper surface of the ramus. This tooth is 
embedded in a very narrow alveolar cavity, situated near the posterior edge 
of the symphysis, the ramus here scarcely bulging out. This is still more 
obvious if we compare that portion of the ramus with that of skulls Nos. 2 
and 3 
Above the posterior edge of the small tooth in the lower jaw, and which 
without doubt has to perform some function, notwithstanding it is covered 
by the gums, a row of small conical teeth, the apices slightly incurved, 
begins on each side of the upper jaw, reaching within an inch of the gape 
of the mouth, which, however, may have somewhat retreated by the drying 
of the skin. These small teeth are situated in a well-defined dental groove 
in the gums. There were nineteen teeth on each side, of which, however, 
several are broken off. They are from 0:20 to 0-40 inch long, and extend 
along a line 6:12 inches in length, standing nearly the eighth of an inch 
apart. Of the whole series the first anterior tooth is the smallest, the 
succeeding ones gradually getting larger till the eighth, and then maintain- 
ing the same size to nearly their termination. 
The crowns of the teeth stand on about the same level with the central 
line of the palate. The opening along the upper surface of the rostrum is 
still unelosed, thus showing that the animal is not so aged as the next 
specimen, No. 2, and I may here add that the rostrum in all three skulls is 
half an inch shorter than the mandible, and that it lies in a well-defined 
groove in the latter. 
Skull No. 2. (Pl. XXVI., Fig. 3.) 
The measures of this skull, as far as I was able to obtain them, show 
that, as previously stated, it was not so elongate as the former, but some- 
what broader and more massive in all its proportions. The rami of the 
mandible widen much sooner than those of the former. About seven 
inches from their anterior extremity they expand considerably, in order to 
form the alveolar cavity for a large tooth, which is here rising conspicuously 
on both sides, having a vertical position. This tooth has a compressed tri- 
angular shape, is 2; inches broad at its base on the line of the gums, and 
13 inches above them. 
On the inner side near the top it is slightly abraded, and on the outside 
broken considerably, so as to suggest that the animal used it for the pur- 
pose of attack or defence, This injury has taken place on both teeth, so 
