TREGELLES : MARINE MOLLUSCA OF CORNWALL. 209 
Var. albescens Jeffi—Mount’s Bay (C.B.). 
Truncatella subcylindrica L. [Z: ¢runcatula Drap. |.—Ply- 
mouth (J.M.B.A.); Falmouth (W.P.C.). 
Rissoa parva DaC.—Generally distributed. 
Var. interrupta Ad.—Generally distributed. 
Var. exilis Jeff—Falmouth (J.T.M.); Scilly (C.B.). 
R. inconspicua Ald.—Off Plymouth, Falmouth, Mount’s 
Bay, Porthcurnow, Land’s End, Scilly. 
R. (Galeodina) striatula Mont. —Falmouth, Helford, Porth- 
curnow, Land’s End, Scilly. 
R. (Alvania) lactea Mich.—Near Fowey, three dead speci- 
mens (J.T.M.). 
R. cancellata DaC.— Falmouth, Mount’s Bay, Porthcurnow, 
Wolf Rock, Land’s End, Scilly. 
R. calathus F. & H.—Whitsand Bay E., Helford, Mount’s 
Bay, Wolf Rock, Land’s End, Scilly. 
R. reticulata Mont.—Looe, Falmouth, Helford, Mount’s 
Bay, I.and’s End, Scilly. 
R. cimicoides Forb.—Falmouth, Helford, Mount’s Bay, 
Porthcurnow, Scilly. 
R. Jeffreysi Wall.—Scilly, a few dead but fresh specimens. 
(CB): 
R. punctura Mont. — Whitsand Bay E., Mount’s Bay, 
Sennen, Scilly. 
Var. diversa Jeff.-—Scilly (C.B.). 
R. (Flemingia) zetlandica Mont.—Falmouth, Mount’s Bay, 
Porthcurnow, Wolf Rock, Land’s End, Scilly. 
R. costata Ad.—Whitsand Bay E., Falmouth, Mount’s Bay, 
Porthcurnow, Land’s End, Scilly. 
R. (Zippora) membranacea Ad.—Falmouth, Helford, 
Mount’s Bay, Land’s End, Scilly. 
Varr. venusta Phil. and elata Phil.—Mount’s Bay (G.F.T.). 
R. violacea Desm.—Falmouth (C.B.); Helford (Truro Mus.); 
Mount’s Bay (R.N.D.), 
22/5/96, : Oo 
