43 



L. spinifera. 



renus spinifera, Mont. 



With the last; not uncommon, but only half the size of the Irish 

 specimens. 



Genus Cyprina, Lam. 



C. vuls;aris, Sowerby. 



In deep water ; not common. 



C. minima, Turt. 



With the last; not uncommon. 



Genus Cytherea, Lam. 



C. exoleta, Turt. 

 In deep water ; rare. 



C, sinuata, Turt. 

 With the last ; rare. 



C. undata, Turt. 

 With the last ; rare. 



C. ovata, Flem. 



With the last ; not uncommon. 







Genus Venus, Auct. 



V. Virginea, Auct. 



In deep water ; not common. 



V. Pullastra, Auct. & var. (perforans.) 

 On the beach at low water mark ; common. 



V. decussata, Auct. 



With the last and equally common. 



V, verrucosa, Auct. 

 In deep water ; rare. 



