MARINE ZOOLOGY sands at Padstow and at Scilly locally abund. 112. var. ovata Jeffreys, obtained by Jeffreys at Fal- mouth. var. quadrata Jeffreys, found at Fal- mouth (Hockin), and at Hayle (Miss Hockin) 103. T. virgineus, Linn. C. on sand and gravel from Plymouth S. to Padstow, sometimes between 113. t-m. as at Porthpean, St. Austell (Richards), and at Helford ; often from 10 to 40 fm. in trawl refuse and dredgings ; at Scilly f. c. on St. Martin's Flats and on the sandy shores of Tresco. var. sarniensts Turton, at St. Austell and Falmouth (J. C.); c. at Helford (Richards); Scilly, r. (S. & C.) ^ 104. T. pullastra, Mont. In sand and fine gravel from between t-m. to 15 or 20 fm. ; occ. Plymouth S., Whitsand B., Par ; Porthpean beach (Richards) ; in trawl refuse, Mevagissey ! Fal- mouth B. ; and abund. at Helford, Mount's B., St. Minver ; at Scilly, esp. Tresco to Bryher (S. & C.). var. performs Mont., about Plymouth (M.B.A.) ; Par (Tellam) ; Falmouth and Penzance (Burkill) and Helford (Hockin) ' ' S- 105. T. decussata, Linn. N. unc. on most sandy or gravelly beaches and in dredge refuse along S. coast ; abund. Helford ; r. Newquay and St. Minver (Tellam) ; the scarcest of the Tapes at Scilly, found in numbers only at one spot on Tean (S. & C.) 1 06. Gouldia minima, Mont. N. unc. trawl refuse jjg^ and in dredgings on sand and gravel from 5 to 40 fm. along S. coast ; occ. on Queen's Gnd. and on Eddystone Gnds. (M.B.A.) ; Falmouth and Mount's B. ; Wolf Rk. (Hockin) ; single valves at Porthcurnow ; Hayle ; 2 at Padstow ! 117- At Scilly in 40 fm. off Menavawr (S. & C.). var. triangularis Mont. occ. Falmouth 107. Irus irus, Linn. Falmouth (Cocks) ; Mousehole (Baily) ; Porthcurnow ; Land's End (E. D. Marquand) ; Hayle and Harlyn B. ; Scilly, r. (M.) 108. Cardium aculeatum, Linn. Trawl refuse r. ; dead shells cast up at long intervals, Pentuan (J. C.) ; Falmouth ; Helford ; Mount's B. and Hayle ; dead shells in almost perfect condition dredged off Helford river, fragments n. unc. in other parts of Falmouth B. ! 109. C. echinatum, Linn. Live specs, n. c. in 8 to 30 fm. on sand and gravel and gen. immature ; dead shells dist. irregularly Plymouth S. to Hayle I 19' and in fresh condition are characteristic of the ' Inner ' and ' Outer ' trawling gnds. at the Eddystone (M.B.A.) ; live specs, at Falmouth (V.) ; off Helford in 15 fm. ! Mount's B. and in Crow S., Scilly (S. & C.). var. expansa Jeffreys, in Plymouth S. (M.) i 10. C. tuberculatum, Linn. Single valves round coast, Looe to Bude ! and occ. fresh dead shells in beautiful condition in trawl refuse and in dredgings from about 20 fm. in Falmouth B. ; have never seen a live Cornish spec. ill. C. papilhsum, Poli. Two fresh valves Falmouth Harb. in 19 fm. (M.) ; Helford (Rogers), Mount's B., dredged (Tregelles), St. Ives (Dodd), and a fresh valve in 40 fm: Scilly (M.) I 145 118, 121 Cardium exiguum, Gmelin. On sand and gravel from 1. w. to at least 1 5 fm., locally c. round coast ; Polperro ! Par sands, Falmouth B., in Mount's B. ; r. Hayle, Perranporth ! Newquay ! and young specs. Harlyn B. (Thelwell) C. fasciatum, Mont. C. in 40 fm. off the Dod- man ! n. unc. in trawl refuse and dredgings, Falmouth B., though gen. small ! Mount's B.; Porthcurnow, dead shells n. unc.; Whitsand B., Land's End ! Hayle, and in deep water off Menavawr, Scilly (S. & C.). var. alba Jeffreys, at Scilly (M.) C. nodosum, Turton. Dead shells n. unc. from Fowey westwards, live specs, apparently only in deep water ; in 40 fm. off the Dodman ! in Falmouth B. 20 fm., chiefly dead shells, but live specs, occ. ! Mount's B. (Tregelles), Wolf Rk. (Miss Carne) ; c. in deep water off Menavawr and occ. alive (S. & C.). var. nsea Lmk., at Falmouth (Hockin) C. edule, Linn. Abund. in sandy bays and flats to Padstow, though only an odd valve has been found at Newquay ; Truro and Helford river, c. ; found at Bude ! Scilly, v.c. var. rustica Jeffreys, at Falmouth (James), var. crcnulata Lmk., Mount's B. (Miss Hockin) ; Hayle (M.R.I.) ; a form approaching this var. occurs abund. near Pentle B. (S. & C.) C. minimum, Phil. Two small valves from Muncoy neck, Scilly (Marshall) ; the first occur- rence on the English coast 50 m. NW. of Land's End in 50 fm. (McAndrew) C. (Laevicardium) norvegicum, Speng. N. unc. and f. gen. dist. on gravel and coarse sand from 1. t-m. to 40 fm. along S. coast ; dead shells often c., and occ. at Hayle ; n. unc. alive in Pentle B. and on St. Martin's Flats (S. & C.). var. gibba Jeffreys, Hayle (Miss Tyacke). var. rotunda Jeffreys, Helford (H.). var. pattida Jeffreys, Helford (Rogers), Mount's B. (Tregelles), Hayle (Miss Hockin) Gar! tellinella, Lmk. In variable numbers in sandy gravel round coast to Padstow, and also on gravels and coarse sands in deep water, e.g. on the Rame-Eddystone Gnds. in 30 fm. (M.B.A), off the Dodman in 40 fm. ! Falmouth B. in 8 to 20 fm. ! c. 1. t-m. and deep water, Scilly G. costulata, Turton. Gen. with G. telRnellavn mainland, and at Scilly but less c. ; on the N. coast only from Hayle G. ferroensis, Chemnitz. Dead shells dist. all round coast to Padstow,. and in places down to 40 or 50 fm. ; live specs, n. unc. from 1. w. downwards, and at times plentiful on the beaches after stormy weather ; f. c. St. Martin's Flats, Scilly (S. & C.) G. (Psammocola) depressa, Pennant. Sparingly dist. on sand and fine gravel between t-m., but odd valves more in evidence than live specs. ; Polperro ! Fowey ! Falmouth B. ; Mount's B. (Marquand), Land's End (M.R.I.) and Hayle, and a few valves at Padstow ! Scilly, but nevei abund. (S. & C.)
