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CUTTLES AND SQUIDS. 67 
the shell of the slug, which is also enclosed within 
the mantle; and both are formed in the same 
manner, namely, by a deposition of horny or shelly 
matter in a fluid state from the sides of the con- 
taining cavity. 
The animals of this Family have ten arms, two 
of which, greatly longer than the rest, are very 
slender except near their tips, which are dilated ; 
these extremities alone are furnished with suckers. 
The other eight arms are short, thick, and fur- 
nished throughout their whole length with suckers, 
forming a double row along their under surface. 
The body is generally lengthened, more or less 
flattened, with the skin dilated on each side so as 
to form a pair of wings or fins. It is probably by 
means of the impetus afforded to the body by these 
expansions, that some species of the I‘amily are 
enabled to throw themselves out of the water, and 
to shoot along through the air to a considerable 
distance with a motion that resembles flight. These 
are commonly called Flying Squid. 
Mr. F. D. Bennett describes a portion of the 
Northern Pacific as peculiarly animated by the 
presence of various oceanic creatures. ‘The Albacore, 
the Sword-fish, the Barracuda, the Bonita, the 
Flying-fish, are mentioned, and among them the 
Squid, whose movements closely resembled those 
of the last-named volatile fish. ‘“ During a calm, 
in lat. 30° N., the Flying-squid appeared in larger 
fights than we had ever before witnessed; per- 
secuted probably by the Albacore (which select 
this tranquil time to descend deep in the water, and 
to rove far from the ship in quest of food) they rose 
from the sea in large flocks, leaping over its smooth 
surface, much in the same mayner, and to the same 
