1865. ] FROM THE CAPE OF GOOD HOPE. 523 
Grampus and Beluga are peculiar for having teeth only in the front 
part of the lower jaw, as in Globiocephalus ; but the teeth of Gram- 
pus are permanent, while those of Beluga are early deciduous. 
The lower jaw is so nearly like the lower jaw which the British 
Museum received from the Museum at Haslar Hospital, without any 
habitat, and which I described in the ‘ Catalogue of Cetacea’ under 
the name Grampus richardsonii, that I have been induced to refer 
the skull to that species. 
The lower jaw from the Cape Seas only differs from the lower jaw 
of the typical specimen of G. richardsonii in being rather more 
slender in front, just behind the gonyx and the end of the teeth- 
line, and in the teeth being apparently rather shorter and more ~ 
slender; but the base of the teeth of the typical specimen is en- 
tirely exposed, and in the one from the South-African Museum they 
are still imbedded in the dried gums; so that the difference is more 
apparent than real. 
The upper edge of the orbit is raised into a decided marginal 
ridge. The maxillary bones in front of the notch are rather ex- 
panded and well bent up on the edge. 
The triangular space in front of the blower is convex, evenly 
rounded, and with a well-marked oblique groove on each side in front. 
The intermaxillary bones are very broad, with a hard, shining, 
smooth, rather convex upper surface; they cover fully two-thirds 
of the upper part of the hinder portion, and much more, or at least 
four-fifths, of the front part of the beak. The palate is flat in front, 
and rather convex behind. The upper jaw is rather bent down at 
the tip, and is destitute of teeth, but has a submarginal line with 
a few small pits. The lower jaw has four conical teeth on each 
side in front, placed over the gonyx. 
Length of the skull 18, of beak from the notch 103, of lower jaw 
142 inches; width of the brain-case at the centre of the orbit 11, of 
beak at the notch 73 inches. 
The triangle in front of the blowers in the skulls of the European 
species is much elongated, the slender front part being produced 
between the intermaxillaries nearly to the end of the beak. 
(1) G. rissoi, of Nice, with 5—5 teeth on the front of the lower 
jaw (Gervais, Zool. et Paléont. Frang. t. 57. f.1, 2). | 
(2) G. griseus, of Brest, with only 2—2 teeth on the front of the 
lower jaw (Gervais, J. c. t. 57. f. 5). . 
In the Cape species the triangle is shorter and much broader com- 
pared with its length, the front side-margin being more transverse. 
(3) G. richardsonii. 
In G. rissoi the outer edges of the intermaxillaries are sinuous and 
rather contracted to nearly the middle of their length. In G. richard- 
sonii the outer edges are rather slightly arched and bent out, the 
bones are widest in the middle of their length, and the nostrils are 
bent to the left side, the right side of the skull being most developed. 
6. The skull which I described from the notes of Mr. Layard and 
the drawing of Mr. Trimen, under the name of Ziphius layardii (see 
