292 SMART AND COOKE : MARINE SHELLS OF SCILLY. 



V. ovata Penn. — Common from the deep water dredgings, of 



good size and colour. 

 V. gallina L. —Not common, sometimes living along the shore, 



and from the Crow Sound dredgings. 

 Tapes aureus Gmel. — Abundant on St. Martin's Flats and 



both sides of Tresco, of fine size and colour : the com- 

 monest of the Tapes. 

 T. virgineus L. — Fairly common with T. aureus. 

 T. virgineus var. sarniensis L. — One or two specimens. 

 T. pullastra Mont. — With T. aureus, especially between 



Tresco and Bryher ; not quite so abundant. 

 T, decussatus L.- — The least common species of Tapes; 



only to be found in any number at a certain spot on Tean. 

 Lucinopsis undata var. sequalis Penn. — The type does 



not occur, the variety is found sparingly on St. Martin's 



Flats. 

 Tellina crassa Penn. — Very abundant in clean sand near 



Pentle Bay, especially where the sand was channelled into 



heaps by the retiring tide. 

 T. crassa var. albida Penn. — With the type, common. 

 T. tenuis DaCosta. — Very scarce, two or three specimens only 



occurred, thrown up on the sandy beaches. 

 T. fabula Gron. — Rare, from Crow Sound, only two or three 



perfect specimens. 

 T. squalida L. — Alive on St. Martin's Flats, but perfect 



specimens very scarce, single valves common from the 



dredging in Crow Sound. 

 T. donacina L. — Sparingly found in all the sandy bays, never 



abundant. 

 T. pusilla Phil. — In clean sand, low water mark, ordinary 

 tides : Pentle Bay and St. Martin's Flats ; local, but not 

 uncommon. 

 Psammobia tellinella Lam. — Living with V. fasciata in 

 Pentle Bay ; indeed it is common all round the shores in 



J.C, iv., April, 18S5. 



