CETACEA. 57 
yeoli, like those which bees keep their honey in, and in these 
were round masses of a white substance, which, upon examination, 
were proved to be sperm. Some of this substance was also found 
xternally on the head, in some parts to the thickness of 2 feet. 
In the superior jaw were 42 alveoli, hollowed out for receiving 
e teeth of the lower jaw; they were of a cartilaginous nature. 
1 the inferior mandible there were 42 teeth, 21 on each side, all 
of the same form, which was like that of a sickle, round and a 
little compressed, thicker and more arched in the middle, and 
pad becoming thinner, terminating superiorly in an acute 
one turning inwards; inferiorly it becomes thinner, and termi- 
‘nates in a more slender root, which is narrower in the middle. 
a teeth those in the middle of the jaw are larger and 
heavier, those external are smaller. One of the larger, 9 inches 
long, weighed 18% oz., and at the thickest end was of the same 
a neth as breadth. The smallest tooth which I got was 7 inches 
Tong and 5 in girth. The osseous part of these teeth projected 
3 inches beyond the gums, was like polished ivory, smooth and 
white ; the fang of each tooth was provided with a large cavity, 
which was so constructed that in the larger teeth there was a 
cavity 3 inches deep. It had two lateral fins, each about 4 feet 
ong, and besides these a long fin on the back. Colour of skin 
black. The throat was observed to be larger than usual in whales. 
“Only one stomach was found.” 
_ The two individuals seen by Sibbald have been divided into 
two species, according to the more or less truncated state of the 
teeth. 
Inthe Catalogue of the Museum of the College of Surgeons, 
the truncated Whale’s-teeth are called “the teeth of the High- 
finned Cachalot, P. Tursio?” p. 171, n. 1189-1194. And the 
‘small jaws of the Sperm Whale are called “the Lesser Cachalot 
‘(Physeter Catodon, Linn.).” 
ia See also Physeter sulcatus (Lacep. Mem. Mus. iv. 475), from 
a Japanese drawing, with the dorsal fin over the pectoral and the 
Jaws grooved. 
4 
7 Fam. 3. DELPHINIDEH. DOLPHINS. 
} 
_ Head moderate. Teeth in both jaws, rarely rudimentary and 
early deciduous. Blowers united together, forming a single trans- 
_Yerse or lunate opening on the crown of the head. 
Diodonea and Delphinia (pars), Rafin. Anal. Nat. 1815, 60. 
~Cete, Carnivora, pars, Lesson, N. Reg. Anim. 197. 
ydraula, Ch. Bonap. Reg. Anim. 
Iphinusideze, Lesson, N. Reg. Anim. 197. 
