44 THE SEA-SHORE 



Scallops swim in a rather curious way, namely, 

 by opening and shutting their valves over and 

 over again. As often as they do this a jet of 

 water is squirted out, and this acts on the sur- 

 rounding water just like the jets which are 

 squirted from the siphon tubes of the cuttle, and 

 drives the animal along with some little speed. 

 As it travels through the water it looks very 

 pretty, for all round the edges of its shell it has 

 a fringe of long feelers, which wave up and down 

 in a most graceful way. By means of these it 

 obtains its food. At the base of these feelers is 

 a row of little black dots, which seem to be 

 eyes. 



PLATE XV 

 THE RADIATED SCALLOP (2) 



This is rather a rare shell, and if you find it 

 lying upon the shore you will be fortunate. You 

 may know it at once if you do find it, for it only 

 has six or seven ridges running down it, instead 

 of about twice that number. It varies a good deal 

 in colour, but is generally reddish brown, spotted 

 and speckled with white. 



