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.) 



