SPAN : MARINE MOI.LUSCA OF TENBY AND NEIGHBOURHOOD. 207 



S. vagina L. — Common on the Laugharne and Pendine beaches. 

 Scarce on Tenby and other sands. 



Pandora insequaevalvis var. obtusa Jeffr. — Dredged alive at 

 Milford Haven. Fairly common. 



Lyonsia norvegica Chem. — Not common. Some fine specimens 

 (living and dead) from Tenby sands. 



Thracia papyracea Poli. — Very abundant on the Laugharne and 

 Pendine sands. Common on other sands. 



T. distorta Mont. — Not common. Good living specimens from 

 stones dredged on the oyster beds. 



Var. truncata Turt. — One specimen, with the type. 



Corbula gibba Olivi. — Fairly common at Saundersfoot, and 

 Milford Haven. A few in other localities. 



Var. rosea Brown. — A few with the type. 



Mya arenaria L. — Common near the Laugharne river. 



M. truncata L. — Common (living) on Tenby sands. 



M. binghami Turt. — A nice series from stones dredged on the 

 oyster beds. 



Saxicava rugosa L. — Very numerous in the limestone rocks at 

 Giltar, St. Catherine's and Caldy Islands. 



Var. pholadis L. — Common, with the type. 



Var. arctica L. — Attached to stones dredged on the oyster beds. 



Venerupis irus L. — Two specimens from limestone, Giltar. 



Gastrochaena dubia Penn. — Small dead specimens, Caldy. 



Pholas dactylus L. — Dead specimens abundant, living rare, in 

 mud banks near Amroth. 



P. Candida L. — Numerous, living, in old trunks of trees in the 

 submerged forest between Saundersfoot and Amroth. 

 *P. parva Penn. — Caldy Sound. 



Teredo norvegica Spengl. — Good living specimens from wreckage 

 brought into Tenby Harbour. 



T. navalis L. — From wreckage thrown up on Tenby sands. 



Dentalium tarentinum L. — Common, but seldom living. Tenby 

 and Laugharne sands. 



Chiton fascicularis L. — On stones. Tenby and other localities. 



C. cinereus L. — On stones, same localities as preceding. 



C. ruber L. — Two specimens on old valves of shells. Tenby. 



Patella vulgata L. — Numerous, and varying in size, shape and 

 colour, all along the rocky coast. 



Var. elevata Jeffr. — Freshwater West, and Waterwynch. 

 Var. depressa Penn. — Waterwynch and other localities. 



Helcion pellucidum L. — Numerous, on seaweed. Giltar, Caldy 

 Island, Lydstep, &c. 



