APPENDIX. 5^5 



of this. In the Spermaceti Whale, the Bottle- 

 nose, the Grampus, and the Porpoise, the lower 

 jaws, especially at the posterior ends, resemble 

 each other; but in both the large and small 

 Whalebone Whales, the shape differs consider- 

 ably : the number of some particular bones like- 

 wise differs very much. 



The Piked Whale has seven vertebrae in the 

 neck, twelve which may be reckoned to the back, 

 and twenty-seven to the tail, making forty-six in 

 the whole. 



In the Porpoise there are five cervical vertebrae, 

 and one common to the neck and back, fourteen 

 proper to the back, and thirty to the tail, making 

 in the whole fifty-one. 



The small Bottle-nose Whale, in the number of 

 cervical vertebrae, resembles the Porpoise ; it has 

 seventeen in the back, and thirty-seven in the 

 tail, in all sixty. 



In the Porpoise, four of the vertebrae of the 

 neck are anchylosed ; and in every animal of this 

 order, which I have examined, the atlas is by 

 much the thickest, and seems to be made up of 

 two joined together, for the second cervical nerve 

 passes through a foramen in this vertebra. There 

 is no articulation for a rotatory motion between 

 the first and second vertebrae of the neck. 



The small Bottle-nose Whale has eighteen ribs 

 on each side ; the Porpoise sixteen. The ends of 

 the ribs that have two articulations, in the whole 

 of this tribe, I believe, are articulated with the 

 body of the vertebra above, and with the ti'ans- 



