208 



NATURAL HISTORY OF OUR SHORES 



seen. (Other forms bore the oyster viz. a certain worm 

 (Leucodore) and a sponge (Clione) but the holes made by 

 murex are cleaner and more decided than those made by 

 the latter.) 



The little purple rock winkle (Murex corallinus) is a 



Fig. 88. Purpura lapillus, and its egg^cases 

 Natural size 



beautiful little mollusc, with strongly -ridged purple shell 

 and a scarlet foot. 



This, and a form that somewhat resembles it (Lachesis 

 minima), may be found under loose stones in rocky places, 

 from half to low tide level. 



reticulata is another borer. This one lives in 



