TREGELLES : MARINE MOLLUSCA OF CORNWALL. 219 
P. nitida Jeff—Mount’s Bay (Chaster, C.B.). 
P. scabra Miill._—Falmouth (W.H.); Mount’s Bay (G.F.T.) ; 
Hayle (W.H.); Scilly, dead specimens very common 
(R.W.J.S.). 
Var. circa Marsh.—Scilly (C.B.). 
P. catena Mont.—Falmouth (W.P.C.) ; Mousehole (R.N.D.) ; 
Porthcurnow (Miss Carne); Land’s End (W.H.); Scilly 
(C.B.). 
Var. zona Jeff.—Scilly (C.B.) 
P. angulata Jeff—St. Ives (J.T.M.). 
Var. circumlustra Marsh. — Eddystone, 28 fathoms 
(J.T.M.). 
P. quadrata S. Wood.—Marked as Cornish by Mr. Hockin. 
P. punctata Clark.— Off Plymouth, Whitsand Bay E., 
Falmouth, Mount’s Bay, Sennen, Hayle, Scilly. 
Var. cingulata Marsh.—Sennen and Scilly (C.B.). 
P. pruinosa Clark.—Off Plymouth (J.M.B.A.); Falmouth 
(Miss Vigurs) ; St. Mary’s Sound, Scilly (C.B.). 
Colpodaspis pusilla M. Sars.—A tectibranchiate mollusk, 
of which only two specimens have previously been obtained. 
Plymouth (J.M.B.A. Oct. 1894). 
Aplysia punctata Cuv.—Generally distributed on S. coast, 
and at Scilly ; no record for the N. coast. 
Pleurobranchus plumula Mont.—Plymouth (J.M.B.A.) ; 
Falmouth (G.F.T.) ; Helford (W.P.C.) ; St. Michael’s 
Mount, (Millett) ; Scilly, dredged in the roadstead, St. 
Mary’s (R.W.J.S.). 
P. (Oscanius) membranaceus Mont. — Plymouth 
(J.M.B.A.) ; Falmouth Harbour and Helford (W.H.); 
Mount’s Bay (G.F.T.) ; Scilly (R.W.J.S.). 
Runcina coronata Quatref.—Plymouth (J.M.B.A.). 
SuB-ORDER VUDIBRANCHIATA. 
Doris (Archidoris) tuberculata Cuv.—Plymouth (W.G.) ; 
Falmouth (W.P.C., R.V.); Mount’s Bay (G.F.T.). 
