8 CLASS CEPHALOPODA. 
Those which have no external shell, according to Linnezus, 
formed but the single genus, 
SEPIA, Lin., 
Which is now divided as follows: 
Octopus, Lam. Polypus of the ancients. 
But two small conical granules, of a horny substance, on 
the two sides, of the thickness of the back ; the sac, having no 
fins, resembles an oval purse; eight feet, all of which are 
about equal, very large in proportion to the body, and united 
at base by a membrane ; they are employed by the animal in 
swimming, crawling, and seizing its prey. The length and 
strength of these limbs render them fearful weapons, which 
they twine round animals; in this way it has even destroyed 
men while bathing. The eyes are small in proportion, and 
the skin contracts over them so as entirely to cover them at 
the will of the animal. ‘The receptacle of the ink is sunk in 
the liver; the glands of the oviducts are small. Some of 
them, 
PoLyPus, Aristotle, 
Have the suckers alternating in two rows along each foot. 
The common species, Sepza octopodia, Lin., with a slightly 
rough skin, arms six times the length of its body, and fur- 
nished with one hundred and twenty pairs of cups, infests the 
coast of Europe in summer, and destroys immense numbers 
of fishes and crustacea. 
The seas of hot climates produce another, Sepia rugosa, 
Bosc., Seb., III. ii. 2, 3, whose body is rougher, arms some- 
thing longer than the body, and furnished with ninety pairs 
of cups. It is from this species that some authors suppose 
the Indian ink is procured. Others, again, 
