SPAN : MARINE MOLLUSCA OF TENBY AND NEIGHBOURHOOD. 209 



R. semistriata Mont. — Common in shell-sand. Caldy. 



R. cingillus Mont. — Scarce, in shell-sand. Caldy. 

 *R. COStulata Alder. — Caldy Sound. 

 *R. inconspicua Alder. — Caldy Sound. 



Hydrobia ulvse Penn. — Swarming on mud flats. Laugharne. 



Turritella terebra L. — Numerous, living, at Milford Haven and 

 Newgall sands, St. Bride's Bay. 



Var. nivea Jeffr. — A few with the type. Milford Haven. 

 Var. gracilis Jeffr. — A few with the type. Milford Haven. 

 *Truncatella truncatula Mont. — Caldy Sound. 



Scalaria communis Lam. — Not uncommon on Laugharne sands. 

 Only dead shells, but fresh and of a large size. 



S. turtonas Turt. — Common on Laugharne sands. Only dead 

 shells, but fresh, some specimens 2 in. in length. 



S. trevelyana Leach. — Rare. One or two from Laugharne sands, 

 and dredged off Tenby. 



S. clathratula Adams. — Not common. A few fine and large 

 specimens from Laugharne (one 1 in. and two nearly f in. in length). 

 More common but smaller from Caldy Island. 



Aclis unica Mont. — Rare. From shell-sand. Caldy. 



A. ascaris Turt. — Rare. From shell-sand. Caldy. 



A. supranitida S. Wood. — Rare. From shell-sand. Caldy. 



Odostomia rissoides Hani. — Common in shell-sand. Caldy. 



O. unidentata Mont. — Common in shell-sand. Caldy. 



O. turrita Hani. — Rare in shell-sand. Caldy. 



O. insculpta Mont. — Rare in shell-sand. Caldy. 



O. indistincta Mont. — Common in shell-sand. Caldy. 



O. interstincta Mont. — Common in shell-sand. Caldy. 



O. scalaris Phil. — Rare in shell-sand. Caldy. 



O. rufa Phil. — Uncommon. Tenby and Milford Haven. 



O. lactea L. — Common in shell-sand. Caldy. 

 *0. pusilla Phil— Caldy Sound. 



Eulima polita L. — Rare. Freshwater West. 



E. distorta Uesh. — Common. Caldy. 



E. intermedia Cantr. — Rare. Freshwater West. 



Natica sordida Phil. — Trawled off Milford Haven. 



N. catena Da C. — Common in all sandy bays between Saunders- 

 foot and the Laugharne river. 



N. alderi Forbes. — Uncommon. Tenby and Laugharne. 



Lamellaria perspicua L. — Small specimens from Caldy Island. 



Velutina laevigata Penn. — Rare. Tenby sands. 



Aporrhais pes-pelecani L. — Numerous in St. Bride's Bay. Rare 

 on Tenby sands. 



