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 A HISTORY OF CORNWALL 80. Tel/ina serrata, Renier. Two valves found by Mar- shall in dredgings from 40 fm. off Menavawr, Scilly 8 1 . T. tenuis, da Costa. Dead shells often met with from Par westwards ; sometimes v. c. Falmouth, Helford, locally in Mount's B., at Porthcurnow and Hayle ; St. Austell B., Crinnis and Pen- tewan beaches (Richards) ; occ. dredged in Fal- mouth B. ; 2 or 3 examples cast up on sandy beaches Scilly (S. &. C.) 82. T.fabula, Gronovius. N. unc. along the S. coast, chiefly in Zostera beds, but occ. in sand at 1. w.; Cawsand B. (M.B.A.), Falmouth Harb.; Gyl- lyngvase beach, Helford, Mount's B. Dead shells at times f. c. at Hayle ; Padstow ! 2 or 3 perfect specs. Crow S., Scilly (S. & C.) 83. Macomabalthica,'L n. Usually found in estuarine sand at 1. w. One spec, from Saltash is the only record for the Plymouth district ; n. unc. Fowey ; abund. Par (Richards) ; Falmouth B. r., though dead shells at times abund., esp. in Harb. ; local in Mount's B. ; Hayle ; not found at Scilly. var. minor Jeffreys, Helford (Rogers) ; var. utvea Jeffreys, Land's End (Hockin) 84. Donax vittatus, da Costa. Dead shells often with perfect valves irregularly from Whitsand B. to Mount's B., and from Hayle to Padstow ; live specs, in sand at 1. w. at Whitsand B., Fowey ! Pendower and Gyllyngvase ! and 2 in Padstow B. ! Not known at Scilly. var. vitida Jeffreys found at Hayle by Miss Hockin ,85. D. variegatus, Gmelin. Single valves only on S. sandy beaches from Plymouth to Porthcurnow ; Hayle and thrice at Padstow ! have never seen a live spec, from Cornwall ; Scilly (Jenkinson) 86. Mactra stultorum, ,Linn. Single valves c. from Whit- sand B., E. to Padstow, and occ. at Bude ! live specs, found occ. in trawl refuse along S. coast ; Scilly (Jenkinson). var. cinerea Mont. Falmouth (Cocks) ; Hayle (Miss Hockin) 8 7. M. glauca, Borm. Single valves occ. Hayle, one at Padstow ! and several fragments at Land's End (Lindsay), var. luteola Jeffreys, at Hayle (MO 88. Spisula sofitta, Linn. C. in sandy bays round coast and at Scilly. var. Intel-media Jeffreys, at Scilly (Smart), var. truncata Mont, often with type, esp. c. in Pentle B., Scilly (S. & C.) 89. S. elliptica, Brown. Irregularly dist. but gen. c. from Plymouth S. to Land's End on the shallow trawling gnds. ; dead valves often found between t-m. ; not recorded for N. coast ; Scilly 90. S. subtruncata, da Costa. Sandy bays from Par to the mouth of the Camel ; occ. in trawl refuse ; Scilly. var. striata Brown, at Helford (Rogers) 9 1 . Lutraria elliptica, Lmk. At 1. w-m. in sandy bays and in the Zostera beds round coast from Ply- mouth S. to Padstow ; valves occ. at Bude ! c. and of large size at Scilly (S. & C.) 92. L. oblonga, Chemnitz. Live specs, n. unc. at Par and Helford ; fresh valves, Falmouth and St. Minver (Tellam) ; Scilly (Jenkinson) 93. Lucinopsis undata, Pennant. Live specs, c. near the mouth of the Helford and taken in Mount's B. ; single valves occ. Plymouth S., Whitsand B., Falmouth, Hayle, and Padstow ! Type does not occur at Scilly. var. atqualis Jeffreys. First recorded from Scilly by Lord Vernon ; found by Smart sparingly on St. Martin's Flats 94. Dosinia exokta, Linn. C. round coast and at Scilly, in sandy bays, and on sand or fine gravel down to 40 fm. ; abund., Scilly 95. D. lupina, Linn. As widely dist. but not so c. as D. exoleta ; scarcer in E. than in W., and more c. in deep water than in shallow ; on N. coast chiefly represented by dead shells ; St. Mary's Flats and Pentle B., Scilly, but seldom found alive (S. & C.) 96. Meretrix chione, Linn. Dead shells round coast from Plymouth S. to Padstow ; live specs, occ. on the sand at 1. s. t. at St. Austell B. (Richards), and at Gyllyngvase beach ; c. in two patches in Falmouth B. in 1 5 fm. ! dredged in Mount's B. ; n. unc. in clean sand, Scilly ; often large and beautiful on St. Martin's Flats and Pentle B. at 1. s. t. (S. & C.) 97. Venus (Clausinclla) fasciata, da Costa. C. round coast and at Scilly in sand and gravel from 1. w. m. to 40 fm. off the Dodman ! and off Menavawr (S. & C.) ; c. also on Coralline ground, var. radiata Jeffreys. With the same range in depth occurs at Polperro ! Falmouth B. ; Porthcurnow ; Hayle ; Scilly littoral and at 40 fm. (S. & C.) 98. V. (Ventricola) casina, Linn. Locally from 1. w. to 60 fm. (Peach, off the Dodman) ; occ. on gravel gnds., 10-30 fm., outside Plymouth S.(M.B.A.); Falmouth B. at 1. s. t. and at 20 fm. ! Mullion ; Mount's B. ; Porthgwarra (Dennis) ; Hayle ; Wolf Rk (Hockin) ; c. Pentle B. at 1. w-m. on St. Martin's Flats and between Bryher and Tresco (S. & C.) 99. V. (V.} verrucosa, Linn. Gen. dist. on sand and gravel along S. coast ; occ. at 1. s. t., as on Pen- dower beach and at Helford, gen. at 10 to 30 fm., but off the Dodman in 40 fm. and over ; odd valves at Hayle and Newquay ! Scilly, n. c. (S. & C.) I oo. V. (Timoclea) ova fa, Pennant. F. c. along S. coast on coralline ground, in trawl refuse, in 10 to 60 fm. dredgings, esp. on gravel ; often attached to the byssus of Pinna (Couch) ; valves at Hayle, Perranporth ! and Padstow ! Scilly, c. from deep-water dredgings. 101. V. (Chamelaea) gallina, Linn. In sand and fine gravel from between t m. to 40 fm. ; f. c., Cawsand B. and occ. on the outer gnds. round Plymouth S. (M.B.A.) ; Polperro, at 1. w. ; Porthpean beach, St. Austell (Richards) ; trawl refuse Mevagissey, Falmouth B. in 20 fm. ! dead shells at Hayle ; live specs, at Perranporth and Newquay at 1. s. t. ! Scilly, n. c., from Crow S. and along the shore (S. & C.) 1 02. Tapes aureus, Gmelin. Only dead shells found around Plymouth (M.B.A), but live specs, at Par, from Pendower to Hayle c., and at Helford and the bar at Falmouth, abund ; also occ. 144