MOLLUSCA : CEPHALOPODA. 



395 



which they cloud the water, and thus conceal themselves 

 whenever they wish to escape from an enemy. 



The word Cephalopod comes from the Greek ~kephale, 

 head, and pous a foot, and is given to these Mollusks 

 because their locomotive organs are attached to the head, 

 as just described. These animals have a most wonderful 

 power of changing their colors the hues of some kinds 

 varying almost every moment. They swim by ejecting 

 water from their " funnel," and by means of their arms, and 

 they crawl on the bottom with the head downwards. They 

 are very voracious, eagerly devouring fishes and other 



FIG. 531. 



FIG. 532. 



Cuttlp-ftsh. Sfpia officinalis, L. 



Much reduced. Britain. 



Suckers of the Cuttle-fish. 



