204 JOURNAL OF CONCHOLOOY, VOL. 9, NO. 7, JULY, 1899. 



P. opercularis L. — Nowhere common, except at times, on Tenby 

 sands, when numbers are found living. The shells are very bright and 

 varied in colour and marking, but nearly always small. 

 Var. lineata Da C. — With the type. 

 P. tigrinus Mull. — Rare. Two perfect specimens, Tenby. Valves 

 from Freshwater West Bay. 



P. maximus L. — Valves only. Tenby, Laugharne and Milford 

 Haven. 



Pinna rudis L. — Trawled in Caermarthen Bay. 

 MytilllS edulis L. — Numerous all along the rocky coast. 



Var. incurva Penn. — Good specimens from Freshwater West 

 Bay. 



Var. pellucida Penn. — Common, at times, on the Pendine and 

 Laughharne sands. This variety is transparent and beautifully rayed. 

 Var. galloprovincialis Lam. — Three specimens only. Saunders- 

 foot. 



M. modiolus L. — Common on Tenby sands. Elsewhere scarce. 



Var. umbilicata. — Two good specimens from Tenby sands. 

 M. barbatus L. — From various localities. My best specimens 

 are from Tenby sands. Living and dead. 



M. adriaticus Lam. — Common on Tenby sands. 

 Modiolaria marmorata Forbes. — Caldy and Manorbier, scarce. 

 Nucula nucleus L. — Very abundant and some fine specimens at 

 Milford Haven. A few at Tenby and Laugharne. 

 Var. radiata F. & H. — A few with the type. 

 N. nitida G. B. Sow. — Common, at times, near Saundersfoot. 

 Leda minuta Mull. — A few dredged at Milford Haven. 



Var. brevirostris Jeffr. — Much more common in the same 

 locality. 



Pectunculus glycimeris L. — Dredged alive, Milford Haven. 

 A few valves only elsewhere. 



Area lactea L. — Valves only. Caldy, and Freshwater West. 

 A. tetragona Poli — A few valves. Freshwater West. 

 *Montacuta bidentata Mont. — Caldy Sound. 

 *M. ferruginosa Mont. — Caldy. 

 Lasaea rubra Mont. — In crevices of rocks. Giltar, and Caldy. 



Var. pallida Jeffr. — With the type. 

 Kellia suborbicularis Mont. — Common from stones dredged on 

 the Tenby oyster beds. 



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

 Lucina borealis L. — Valves numerous, but perfect shells rare. 

 Tenby sands. 

 *L. spinifera Mont. — Milford Haven. 



