sinking downwards through the water. Then the tips 



of the arms separate radially like the ribs of an umbrella, 

 so as to stretch out the triangular pieces of web between 

 the arms. 



Eledone has another mode of progression — creeping. 



This it does with a gliding' motion, sometimes slowly, at 

 other times more rapidly particularly when in pursuit of 

 food. When creeping, the body is raised from the floor 

 of the tank, and the animal advances somewhat in the 

 posture of the Text fig. T, creeping by means of the 

 suckers on the middle region of the arms. Sometimes 



Pig. I. —Eledone rirrngn. at rest. 



the suckers further down are used, and consequently the 

 body is raised higher, while the animal appears to 

 advance on tip-toe. Eledone generally creeps thus when 

 stalking prey. Often when creeping up the wall of the 

 tank, the arms are well separated, so that the web is 

 half extended. Apparently, Eledone only swims when 

 seeking to escape. Possibly when not in captivity it 

 may have nocturnal periods of activity, when swimming 

 lakes place. Careful watching of active specimens has 

 not, however, revealed this habit, but that may be 

 explained, perhaps, as due to artificial conditions. 



