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 A HISTORY OF CORNWALL 34. Pecten (Chlamys) varius, Linn. Gen. dist. and often c. from between t-m. to 40 fm. ; Scilly in deep water off Menavawr (S. & C.) ; and among stones at Annett ! var. purpurea Jeff. Falmouth (Tregelles), Truro river (James) [P. (Chlamys) sukatus, Mull. ' M. Hanley showed me a single valve said to have been trawled near the Runnelstone (Wolf) lighthouse off the Land's End.' (Jeffrey, Brit. Conchology, v, 167)] 35. P. (Aequlpecteri) opercularis, Linn. Gen. dist. round coast between t-m. in Zostera beds and down to 40 fm. ; in deepish water often in thickly populated beds ; Scilly c. var. ftneata da Costa, Fowey ! Falmouth, Helford, Mount's B. and off Menavawr and St. Martin's, Scilly (S. & C., Jeffreys), var. tumida Jeffreys, Fowey ! [A spec, of Pecten clavatus, var. septemradiatus, marked 'Falmouth' in M.R.I.] 36. P. (Palliolum) tigerinus, Mull. Apparently local, but n. unc. in 10 to 40 fm. ; Rame-Eddystone and Eddystone Gnds. (M.B.A.) ; off the Dod- man ! Falmouth ! 3 valves at Mullion ! Mount's B. ; Porthcurnow (Dennis) ; odd valves at Land's End (James) ; n. unc. Scilly on stony ground off Menavawr (S. & C.). var. coitata Jeffreys, off the Dodman in 40 fm. ! and outside Menavawr, Scilly (S. & C.) 37. P. (Palliolum) incomparabifis, Risso. Land's End and Nare Pt. (Hockin) ; one spec, in 15 fin. Falmouth B. ! 38. P. (Palliolum) itriatus, Mull. Plymouth (Jor- dan) ; Eddystone (M.) ; Wolf Rk. (Miss Came) ; Scilly (Jeffreys) 39. P. (Palliolum) similis, Leskey. Evidently local ; single valve Fowey Harb. ! occ. spec. 20 fm. Falmouth B. ! Mount's B. (McAndrew & Forbes) ; Wolf Rk., and outside Menavawr, Scilly, small and local (S. & C.) 40. Lima subauriculata, Mont. Whitsand B. (Jeff), Fowey (M.), 40 fm. off the Dodman ! Fal- mouth, Mount's B. (McAndrew & Forbes), Porthcurnow, Harlyn B. (Thelwell) ; a few valves off Menavawr, Scilly (S. & C.), alive in St. Mary's S. (M.) 41. L. loscombi, G. B. Sow. Rame-Eddystone Gnds. and n. unc. on the coarse grounds W. of the Eddystone (M.B.A.) ; Falmouth B. 25 fm. ! in deep water Mount's B. ; Porthcurnow, odd valves; Land's End; Wolf Rk. (Baily) ; live spec, r., single valves f. c. outside Menavawr, Scilly (S. & C.) 42. L. hians, Gmelin. Abund. 1. s. t. in a stony patch N. of Plymouth breakwater (M.B.A.) ; St. Austell B., single valves only (Richards) ; few single valves 15 fm. Falmouth B. ! Mount's B. (McAndrew & Forbes), var. tettcra Turton, 40 fm. off the Dodman ! 1 5 fm. Falmouth B.! Falmouth (Burkill); Land's End; few valves outside Menavawr, Scilly (S. & C.) EULAMELLIBRANCHIA 43. Turtonia minuta, Feb. Few stray specs., chiefly single valves, Falmouth (Jeffreys), Mount's B., Land's End (M.R.I.) and Scilly (Penzance Mus.) 44. Astarte sulcata, da Costa. Apparently n. unc. in deepish water ; often 15 to 30 fm. off Ply- mouth (M.B.A.) ; in trawl refuse Mevagissey ! 20 fm. Falmouth B. ! in trawl refuse Mount's B. (Tregelles) ; 2 living specs, and about 1 2 valves from deep water off Menavawr (S & C.). Var. paucicostata Jeff., Mount's B. (Miss Tyacke) 45. A. compressa, Mont. Two live specs, from trawl refuse and 3 valves on Gyllyngvase beach (Cocks), and a single valve from Mount's B. (Miss Tyacke) 46. GooJallia triangularts, Mont. Evidently local at 30 fm. or more, rarely cast up on the coast ; abund. off the Eddystone (M.) ; Whitsand B. (Jeff.), Falmouth (Mont.), Mount's B. (Tre- gelles), Land's End, Harlyn B. (Thelwell), Scilly (McAndrew) 47. Isocardia humana, Linn. Off Fowey (Peach) ; n. unc. in trawl refuse and dredgings from Falmouth B. and off the Manacles 48. Cyprina islandica, Linn. Apparently n. unc., 10 to 40 fm. ; occ. dredged off Plymouth ; Pol- perro ! in 40 fm. off the Dodman ! 20 fm. in Falmouth B. ! from shallow water to 20 fm. Mount's B. ; Mullion, Whitsand B., Hayle ; young specs. Crow S., Scilly (S. & C.) 49. Loripes lacteus, Linn. N. unc. in trawl refuse and dredgings from Falmouth B. ; few valves at Hayle, and on St. Martin's Flats (S. & C.) ; a live spec, obtained by C. Jeffreys at St. Mary's, Scilly 50. Divaricella commutata, Philippi. Obtained by Jeffreys at St. Mawes, by Montagu from Fal- mouth, by Turton from Land's End ; valves occ. found at Hayle, and evidently c. and fresh in Crow S., Scilly (S. & C.) 5 1 . Lucina spinifera, Mont. Dead shells n. unc. Plymouth district, but only one live spec, on Rame-Eddystone Gnds. (M.B.A.); n. unc. in trawl refuse and in 20 to 30 fm. dredgings from Falmouth B.; Mount's B.; St. Mary's S., Scilly (M.) 52. L. borealis, Linn. Dead shells along S., at times abund., and occ. at Hayle, Newquay ! Harlyn B. (one young valve, Thelwell), and Bude ! Live specs, irregularly from the Zostera bed down to 40 ftn. Cawsand B. to Mount's B., and at Scilly 53. Thyasirafaxuosa, Mont. Single valves often v. c. as at Cawsand B., Mount's B. (Tregelles), Scilly, and at Falmouth in March, 1904 ; Hayle (Hockin) ; live specs, abund. 1 5 fm. off Pennance ! n. unc. occ. in trawl refuse at Mevagissey ! Falmouth and Penzance ; rr. Crow S., Scilly (S. & C.) [T. fcrruginosa, Forbes. Is given in the Penzance list, but no authenticated Cornish spec, can be found] 54. Montacuta substriata, Mont. N. unc. on the anal spines of Spatangus purpureus around Plymouth, in Whitsand B., at Polperro, off the Dodman ! Falmouth B. 15 to 25 fm. ! Mount's B. and Scilly. 142