480 THE OCEAN WORLD. 
expanding ends, and stalked suckers (Fig. 323) ; eyes moving in their 
sockets, and in Sepia the body is broadly ovate. 
The body of the cuttle-fish (Sega, Fig. 324), is a very singular 
structure, somewhat reminding us of certain species of polyps. We 
find a body or abdominal mass, separated by compression from the 
head, which is sufficiently marked. The body is covered by the 
mantle, which has the form of a sac opened only in front by a trans- 
verse cleft. The head has a projecting and well-developed eye on 
, Fig. 323. Fig. 324. Fig. 325. ; 
Sepia tuberculosa (Lamarck), Sepia officinalis (Linnzus.) Internal shell of Sepia 
arm of. officinalis. 
each side; it is crowned by a sort of fleshy receptacle, which is 
surrounded by four or five pairs of tentacles. At the bottom of this 
receptacle is the mouth; and from the anterior opening in the 
mantle the funnel issues, which is wide at its base. 
The body is also bordered on all its length on both sides with a 
wing or narrow fin ; it is broader than it is long, with two large eyes, 
covered by an expansion of the skin, which becomes ‘transparent over 
a surface equal to the diameter of the iris, and furnished with inferior 
contractile eyelids. 
The skin of the cuttle-fish contains in one vast hollow, occupying 
all the extent of the back, a great calcareous shell, the form and 
