44 



V. Gallina, Auct. & var. (laminosa.) 



On the beach at low water mark ; common. 



V. fasciata, Auct. 

 In deep water ; rare. 



Genus Astarte, Sow. 



A. Vulgaris. 



Venus Dawnoniensis, Mont. 

 In deep water ; abundant. 



A. pallida. 



Venus Scotica, Mont. 



With the last ; but less common, 



(^l23X^^riS^tS A. semisulcata, (N. S,) 



With the last ; not common. 



A. compressa, Flem. 

 With the last; very rare. 



Family Pylorid^, Rang. 

 Genus Corbula, Lam. 



C. Nucleus, Turt. 



In deep water ; common. 



C. rostrata, (IN. S.) 



With the last. One single valve (the lower one) only occurred to me 

 but it is so characteristic as to leave no doubt of its being distinct from 

 every other species. 



Genus Mya, Auct. 



M. Arenaria, Auct. 



In gravel at low water mark ; common. The Sphenia Swainsoni of 

 Turton is the young of this. 



M. truncata, Auct. 



With the last; but not equally common. 



