MARINE ZOOLOGY 55. Af. bldentata, Mont. Occ. in 5 to 1 5 fm. on fine sand in Falmouth B. ! Mount's B., Porth- curnow, Land's End ; 4 valves in Harlyn B. (Thelwell), 2 valves at Bude ! c. in 8 fm., Crow S., Scilly (S. & C.) 56. Af. davuonl, Jeffreys. 'A single valve but unmistakable,' dredged in 40 fm. off Menavawr, Scilly (M.) 57. M. donaclna, S. V. Wood. A single valve at Falmouth in 1839 (Jeffreys). 58. TclKmya ferrugmosa, Mont. F. c. locally along S. coast in fine sand, from between t-m. to 30 fm., usually with Echinocardium cordatum ; Whitsand B., E. ; Polperro ! trawl refuse, Mevagissey. Porthscatho ! occ. dredged in 10 to 15 fm. in Falmouth B. ! Mount's B., Porthcurnow, Hayle (Miss Hockin), Harlyn B. (Thelwell), Padstow ! c. in 8 fm. Crow S., Scilly (S. & C.) 59. Diplodonta rotundata, Mont. Dead shells, often quite perfect, sparsely dist. round coast to Padstow, and on St. Martin's Flats, Scilly (S. & C.) 60. Kellia suborblcularls, Mont. F. c. on S. coast and in places abund., esp. on rocky shores, from 1. w. to 40 fm. in crevices, attached to stones, in molluscan rock-borings and in fine silt inside dead shells; Hayle, Harlyn B. (Thelwell), Widemouth B. near Bude ! Scilly in 40 fm. off Menavawr, and under stones on St. Martin's Flats but never c. (S. & C.). [var. lactea Brown marked by Hockin as Cornish but no spec, hai been preserved.] 61. Lasaea rubra, Mont. C. between t-m. round coa^t, esp. in crevices on rocky shores ; abund. even at Newquay and Widemouth B. ! Harlyn B. (Thelwell) ; widely dist. Scilly. var. pallida Jeff., rocks under Cromwell's Castle, Scilly (S. & C.) 62. Ltpton iquamosum, Mont. Dead shells occ. be- tween t-m. and in dredgings ; Plymouth, Fowey (Alder), Helford (Hockin), Mount's B. (Tregelles), and Scilly (Jenkinson) 63. L. nitidum, Turton. Falmouth (Rogers) and St. Mary's S., Scilly (M.). var. convexa Alder, Falmouth (Hockin), and S. Mary's S., Scilly (M.). var. plsldlalls Jeffreys in 40 fms. Scilly (M.) 64. L. sykesii, Chaster. Dr. Chaster found this in sand dredged by Tregelles in Mount's B.; previously only from Guernsey. 65. L. sukatulum, Jeffreys. Burkill and Marshall found a dozen perfect specs, and many valves at Muncoy Neck and off Menavawr, Scilly ; off Land's End (M.) 66. L. clarklae, Clark. Fowey (Barlee), Falmouth (Hockin), Sennen and St. Ives (M.) ; a few valves off Menavawr, Scilly (M.) 67. Galeomma turtoni, J. de C. & G. B. Sow. Two single valves off Menavawr, Scilly, one by Smart, the other by Burkill 68. Syndosmya priimatica, Mont. Single valves f. c., occ. abund. around Falmouth, Mount's B., and Hayle ; live specs, at times in trawl refuse, Falmouth and Porthloe ! dredged from patch of muddy sand in 15 fm. off Pennance ! and in shallower water, Mount's B. ; c. at Scilly in 8 fm. in Crow S. and inside Round Is. (S. & C.) 69. Syndosmya nitida, M011. Occurs with prismatica in all the above localities, though often scarce ; Cawsand B. (M.) 70. S. alba, Wood. Probably often overlooked ; identified in trawl refuse at Falmouth, though not found off Pennance ! valves found in Hel- ford river, at Hayle, and Harlyn ^ (Tellam); Mount's B. ; Scilly (Smart). va. oblonga Marshall, Scilly (M.) 71. S. tennis, Mont. Dead valves, Mount's B. (Miss Tyacke), Hayle (Hockin) 72. Scrobicularia plana, da Costa. Usually found in silt and fine mud. Headquarters in creeks of Falmouth Harb. and Helford river ; c. in St. John's Lake, Hamoaze ; Looe, Par, Fowey, Mount's B., Hayle, mouth of the Camel, and at Porthellick, St. Mary's, Scilly (S. & C.) 73. Ervilia castanea, Mont. Valves occur in Whit- sand B., St. Austell B., Gorran Haven ! scarce in Falmouth B., at Mullion, abund. locally Mount's B. and Land's End, Hayle ; and Bude (3 valves !) ; Scilly, off Menavawr and Muncoy and in St. Mary's S., the two first-named places having each yielded one perfect adult example (M.). var. subtrigpna Marshall, Land's End and Scilly (M.) 74. Gastrana fragifis, Linn. Found at Falmouth by Miss E. Carne 75. Tellina balaustina, Linn. A single valve from trawl refuse Falmouth, Aug. 1845, and a per- fect shell from same boat, 1848 (Cocks). A fine valve in fresh condition from St. Mary's S., Scilly (M.) 76. T. crassa, Gmelin. Evidently gen. dist. from Plymouth to Padstow ; single valves Bude and Marsland Mouth ! often between t-m. after storms, c. in trawl refuse ; dredged down to 40 fm. off the Dodman ; n. unc. at Scilly. var. albida Jeffreys, equally c. with the type, Porthpean, St. Austell (Richards) ; often dredged with the type in 10 to 25 ftn., Falmouth B. ! with the type near Pentle B., Scilly (S. & C.) 77. T. squalida, Pulteney. Dead shells found from Plymouth to Hayle, but usually scarce on beaches, though at times c. in trawl refuse ; live specs. St. Austell B. (Richards) ; Gorran Haven ! c. off Helford river ; at Scilly, alive on St. Martin's Flats, valves c. Crow S. (S. & C.) 78. T. donaclna, Linn. Sparingly dist. in sandy bays along S. coast, often between t-m. or at 1. s. t. ; Whitsand B. (Robinson), near Looe (Waters), Pendower beach, Gyllyngvase beach, Mount's B., Porthcurnow (Dennis) ; occ. in trawl refuse ; Scilly, n. c. 79. T. pusilla, Philippi. Dist. and habitats similar to those of T. donaclna, more c. ; not recorded E. of Fowey ; Harlyn B. (Thelwell) and stray valves at Bude ! Pentle B. and St. Martin's Flats (S. & C.)
