NOTES ON THE MARINE MOLLUSCA OF PORT-STEWART. 7 



been obtained attached by a green byssus to the corners of 

 old Mytilus modiolus. Mr. Frank Coulson has also taken 

 it off Kerrera; off Loch Don, living, in 97-120 fathoms ; and 

 off Croulin Island in 15-50 fathoms. Messrs. Chaster and 

 Heathcote, in their exhaustive report on the molluscan 

 fauna of Oban Bay {Journal of Conchology, Vol. VII., p. 

 307) can only add to the mention of its capture by Canon 

 Norman, " two dead and worn valves." It is not unlike 

 the well-known Mediterranean shell Area Noce, L. 



Montacuta ferruginosa (Mont.). — Valves washed up in consider- 

 able abundance along the sands. 



Lucina borealis (L.). — Moderately common, but seldom full- 

 grown. "Single valves are commonly thrown ashore on 

 the Derry Coast, where also the writer has found living 

 specimens " (Praeger). 



Axinus flexuosus (Mont). — A single very large valve. 



Cardium echinatum, L. — " Single valves of large size are 

 abundant, and complete specimens frequent, on the sandy 

 beaches of Magilligan and Portrush" (Praeger). The 

 young specimens of this shell, as a rule, had their spines 

 very well developed. 

 *C tuberculatum, L. — Mr. Praeger omits this shell from his North 

 of Ireland list, yet I found it in fair numbers on the broad 

 stretch of sand near Port-Stewart. Jeffreys (Brit. Conch., 

 Vol. II., p. 273) has a remark "Leach says, 'abundantly in 

 the Firths of Forth and Clyde, Youghal, Bantry, Cork, and 

 Dingle Bays, Ireland,' but I fear he has confounded this 

 species with C. echiiiatum." The only West of Scotland 

 records I have for it are Bute (on the somewhat doubtful 

 authority of the late Mr. Smith, of Jordanhill, as C. 

 rusticum) and Lewis, as a locality given by the late Dr. 

 Robertson, of Millport. It is quite recognisable from 

 C. echinatum. I have valves from Broad Bay, Stornoway, 

 and from Ballantrae. 

 *C. exiguum, Gm. — Three worn valves. " Portrush, dead — Miss 

 Richardson " (Praeger). 



C. fasciatum, Mont. — Tolerably frequent. 

 *C. nodosum, Turt. — Two valves. 

 *C. edule, L. — Not by any means abundant. 



