82 CETACEA. 
in circumference. Teeth 28-28. Vertebre 65: cervical 7; 
dorsal and ribs 13; posterior 45. V-shaped bones commencing 
between the thirty-fourth and thirty-fifth vertebre. Length of 
base of cranium 11, of spinal column 42 inches= 53. Weight — 
of cranium | |b. 1 oz., of trunk and extremities 2 lb. 15 oz. = 4 lb. 
2. Of afemale 74 inches long, killed in the Thames: has cora-— 
coid clavicles. It also differs from the preceding in the following” 
particulars :—There are only twelve ribs on each side (24); the 
vertebrae towards the caudal extremity are much more slender 
and delicate, while the transverse and spinous processes of the 
dors] and lumbar vertebre are much broader and stronger; the 
cranium is considerably smaller and narrower. The elevation of 
the occipital bone less, but more rounded. Condyles of the oe- 
cipital bone greatly less, yet the weight of both skeletons is nearly 
equal. There are only 64 vertebra, but the last is evidently 
wanting, and has been lost.—Knoz, p. 32. A foetus was taken: 
from the uterus of the female porpoise (whose skeleton, No. 1, 
is above referred to from the Firth of Forth); it measured, from 
snout to centre of tail, 26 inches; circumference 16 inches. Its 
great bulk, considering the size of the parent porpoise (56 inches), 
is remarkable, and renders the supposition that the porpoise does 
not suckle her young extremely probable.—Knozg, p. 34. n. 104. 
This difference in the skeleton shows the probability of there 
being two species confounded on our shores, or else that there are 
great variations in the bones of this animal even of the same sex. 
c. Upper and lower jaw with many teeth, rarely deciduous 
with age. Wings of the jaw-bone horizontally produced 
over the orbits. Delphinina. 
Delphinina, Gray, Zool. Ereb. & Terror, 30. 
* Head rounded in front, not beaked. Nose of skull scarcely 
so long as the brain-cavity. Dorsal distinct. 
8. GRampus, Gray. 
Head rounded, forehead rather convex. Teeth conical, often 
truncated in the front half of the lower jaw. Dorsal distinct, 
low, rather behind the middle of the back. Pectorals ovate, 
rather elongate. @ 
Skull depressed ; intermaxillaries dilated, covermg great part 
of the maxilla above, rather swollen behind in front of the blow- 
ers, the hinder wing of the maxilla horizontal and rather thick- 
ened and bent up over the orbit, and slightly dilated and reflexed 
just in front of the notch. 
Grampus, pars, Gray, Spic. Zool. 2, 1828. 
Grampus, Gray, Zool. E. & T. 30, 1847. 
