200 TREGELLES : MARINE MOLLUSCA OF CORNWALL. 
Homalogyra atomus Phil.—Falmouth (Barlee); S. Mawes 
(W.H.) ; Mount’s Bay (Penz. List); Land’s End (J-G.J.); 
Scilly (C.B.). 
H. (Ammonicerina) rota F. & H.—Falmouth (J.G.J.) ; 
Mousehole (Templer); Land’s End (Webster); Carbis 
Bay and Scilly (C.B.). 
Littorina neritoides L.— Plymouth Sound, Falmouth, 
Lizard, Mount’s Bay, Porthcurnow, Gurnard’s Head, Scilly. 
L. obtusata L.—Generally distributed. 
Var. fabalis Turt.— Falmouth and Maenporth (R.N.D.). 
L. rudis Maton.—Generally distributed. 
Var. saxatilis Johnst.—Mount’s Bay and Helford (Miss T.). 
Var. sulcata Leach.—Land’s End (Turton) ; Scilly (Barlee). 
Var. jugosa Mont.—Falmouth (J.T.M.); Prussia Cove 
(Miss T.). 
Var. patula Thorpe.—Eddystone, Lizard, Mount’s Bay, 
Gurnard’s Head, Portreath. 
Varr. globosa Jeff. and tenebrosa Mont.—Hayle (Miss H.). 
Var. similis Jeff—Kynance Cove (Miss T.). 
L. littorea L.—Generally distributed. 
Lacuna divaricata Fabr.—Mount’s Bay, common in shallow 
water (G.F.T.); Porthcurnow (J.G.J.) ; Land’s End (James). 
Var. quadrifasciata Mont. -— In shell-sand along south 
coast (J.C.); Falmouth (W.P.C.); lLand’s End (Truro 
Museum). 
L. crassior Mont.—Porthcurnow (R.N.D.); Hayle (W.H.) ; 
Scilly, two dead specimens (R.W.]J.S.). 
L. puteolus Turt.—Porthcurnow (R.N.D.); Land’s End 
(Woks); Selayle (MisseHia)iseilly (CB): 
Varr. conica Jeff. and expansa Jeff.—Mount’s Bay (C.B.). 
Var. lactea Jeff.—-Hayle (Miss H.). 
L. pallidula DaC.—Talland (J.C.); Falmouth (Brown); 
Penzance (Miss Carne); Porthcurnow (R.N.D.); Hayle 
(Miss H.); Scilly (R.W.J.S.). 
Var. patula Thorpe.—Lantivet Bay (Laughrin). 
(To be continued). 
J.C., vili., April 1896. 
