TREGELLES : MARINE MOLLUSCA OF CORNWALL. 213 
O. clavula Lov.—Plymouth (J.M.B.A.); Falmouth Harbour 
(W.H.); Scilly (R.W.J.S.). | 
O. Lukisi Jeff—Porthgwarra (R.N.D.); Scilly (C.B.). 
O. pallida Mont.—Off Plymouth, Looe, St. Michael’s Mount, 
Mount’s Bay, with dredge and traw], Land’s End, Falmouth, 
Scilly. 
Var. angusta Jeff—Falmouth Harbour (J.1.M.); Scilly 
(R.W.J.S.). 
O. albella Lov.—Falmouth (C.B.); Penzance (R.N.D.); 
Scilly (C.B:). 
Var. sub-cylindrica Marsh.—Scilly (J.T.M.). 
O. rissoides Han.—Fowey, Mount’s Bay, Land’s End, Scilly. 
Var. alba Jeff.—Scilly (R.W.J.S.). 
Var. dubia Jeff—Land’s End, (W.H.); Scilly (R.W.J.S.). 
Dr. G. W. Chaster, who has made a study of the Odostomic, 
agrees with Clark in regarding O. albella and O. rissoides as 
dwarf littoral varieties of O. pallida (J. of Conch., 1893, p. 299). 
QO. conoidea Broc.—Falmouth, 30 fathoms (W.H.) ; Mount’s 
Bay, dead (G.F.T.). 
Var. australis Jeff.—Falmouth, (Barlee and others) ; Scilly 
(RaWaless): 
O. umbilicaris Maim.—Land’s End (W.H.). 
O. acuta Jeff—Falmouth Harbour (W.H.); Penzance 
(R.N.D.) ; Mount’s Bay (G.F.T.). 
O. conspicua Ald.—Scilly (R.W.J.S). 
Falmouth (W.H.); Penzance (R.N.D.); 
Mount’s Bay, dead (G.F.T.); Land’s End (Truro Museum); 
Scilly (R.W.J.S.). 
Var. elata Jeff—-Falmouth Harbour (J.T.M.); Scilly 
CRAWAIESS): 
O. turrita Han.—Falmouth (C.B.); Penzance (R.N.D.). 
Mount’s Bay, dead (G.F.T.) ; Land’s End (W.H.). 
Var. striolata Ald.—Land’s End (W.H.). 
Var. nana Marsh.—Scilly (C.B.). 
O. plicata Mont.—Near Fowey (J.T.M.); Penzance (R.N.D.); 
Hayle (W.H.). 
