70 CETACEA. ee 
There is a skull from Greenland, presented by Capt. Wareham, 
in the Newcastle Museum. Height of occiput, 25; of ridge, 32. 
Length of skull, 92; to front of ridge, 54; of beak, 26 inches. — 
There is also a skeleton with the skull from the Firth of Forth, m © 
the College Museum, Edinburgh ;. the skull of which is 68 inches | 
long; the crest very thick, far apart, and erect internally and 
rounded externally. coq 
There is a very perfect skull of this species m a garden on the 
borders of Lancaster Bay, taken in that bay. if 
The examination of four skeletons and six or eight skulls of 
H. rostratum, and of three skulls of this species, have satisfied me 
that it must be the remains of a perfectly distinct species: it not 
only differs from H. rostratum m the thickness and solidity of the 
crest, but in the crest bemg much higher than the hinder part of - 
the skull, while in all the skulls of H. Butzkopf the crest is of 
the same height with the frontal ridge. . 
Doubtful species. 
1. Delphinus densirostris, Desm. Nouv. Dict. N. ix. 178; Mam. - 
522, note. - 
Only described from a fragment of a jaw, 9 inches long, 23 — 
inches high, and 2 inches broad at the widest part, straight, py- 
ramidical, triangular at the end, and without any teeth or cavity 
for any tooth in the lower jaw. It is very heavy and dense. 
Probably the end of a Hyperoodon. . 
2. Alugninich, Tschieduk, Chamisso, Nov. Act. Nat. Cur. xu. 261. ; 
t. 20. f.8, which Fischer (Syn. Mam. 515) refers with doubt 
to D. spurius, is perhaps a species of this genus. 
One of the species of this genus may probably be the, Goose- 
beaked Whale of Pontoppidan, Hist. Nat. Norway, ch. vy. 123,” 
124. f. 
2. ZIPHIUS. 
Head contracted behind; nose produced, not separated from ~ 
the forehead; eyes moderate; blowers on crown, lunate; teeth 
two, large, compressed, in the middle of the lower jaw; throat_ 
with two diverging furrows; body elongate; pectoral fins small, 
low down, oval, tapering; dorsal faleate, behind the middle of 
the body. a 
Skull with nose elongated, produced, keeled on each side 3 
skull-cavity small; forehead high; hinder wing of the maxilla 
- expanded, horizontal; palate smooth; lower jaw broad behind 
narrowed and bent down in front of the large lateral teeth, 
