Class IV. UNICORN NARWHAL. 77 



opening small ; the upper lip longest. The eye 

 was about an inch diameter, situated behind the 

 opening of the mouth, and nearly under the spi- 

 racle ; the pupil black, the irides chesnut. The 

 pectoral fins, or the organs which serve the 

 purpose, were small in proportion to the size of 

 the animal, measuring only fifteen inches in 

 length, and six inches in the broadest part. 

 The tail, as in all the cetaceous tribe, was placed 

 horizontally, and had a slight indentation ; the 

 lobes were equal, and the distance between 

 their extreme parts was thirty-two inches. The 

 color of the upper part of the body was a dusky 

 black, variegated with obscure darker spots ; 

 on the sides were numerous longitudinal spots •, 

 the belly was white. The outer skin was thin, 

 pellucid, and easily separated ; the true skin 

 was nearly a quarter of an inch thick, and 

 closely united with the layer of fat which enve- 

 loped the whole body. 



The subject here described had neither at- 

 tained its size or due proportions, as the Nar- 

 whal grows to the length of more than twenty 

 feet and its tooth to that of ten. This generally 

 issues out of the left side of the nose, while a 

 small one is concealed under the muscles on 

 the right ; but there are instances of both teeth 

 growing to the same length. 



