TREGELLES : MARINE MOLLUSCA OF CORNWALL. 197 
C. nitens Phil. — Fowey (J.T.M.); Falmouth (W.P.C.) ; 
Sennen and Scilly (C.B.). 
C. serpuloides Mont.—Falmouth (W.H.); Helford (W.R.) ; 
Mount’s Bay (Penz. List); Scilly (C.B.). 
Trochus (Trochocochlea) crassus Pult. [ 7: Zeatus DaC.] 
—Generally distributed. 
T. crassus var. minor Jeff.—Helford (W.R.). 
Gibbula maga L.—Generally distributed. 
Var. alba Jeff—Scilly (R.W.].S.). 
G. cineraria L.—Generally distributed. 
Varr. electissima Bean and variegata Jeff.— Helford 
(W.R.). 
G. umbilicata Mont.—Generally distributed. 
Var. atropurpurea Jeff—Falmouth (G.F.T.) ; Hayle and 
Mawgan Porth (Miss H.). 
G. tumida Mont.—Plymouth Sound (J.M.B.A.); Falmouth 
(R.N.D.); Mount’s Bay, trawl refuse (G.F.T.); Porth- 
gwarra (R.N.D.); Land’s End (W.H.) ; Scilly (R.W.J.S.). 
Calliostoma Montacuti W. Wood.—Falmouth (Miss Carne) ; 
Mount’s Bay, trawl refuse (G.F.T.) ; Scilly (R.W.]J.S.). 
C. striatum L. — Falmouth (Montagu) ; Hleliiordl (W.H.) ; 
Mount’s Bay (Miss I.) ; Land’s End (McAndrew) ; Scilly 
(R.W.J.S.). 
C. exasperatum P ‘almouth, Helford, and Penzance 
(R.N.D.) ; Land’s End (Maton). 
C. millegranum Born.—Falmouth, 30 fms. (W.H.); Porth- 
gwarra (R.N.D.); Wolf Rock (Miss Carne); Scilly, one 
specimen only (R.W.J.S.). 
Var. pyramidata Jeff.— Mount’s Bay (C.B.); Scilly 
(R.W.J.S.). 
C. granulatum Born.—Plymouth Sound, S.E. Cornwall, Fal- 
mouth, Maenporth, Mount’s Bay (trawl refuse), Land’s End, 
Scilly. 
Var. lactea Jeff_—Mount’s Bay and Scilly (C.B.). 
C. zizyphinum L.—Generally ditsributed. 
