MARINE ZOOLOGY 



1 5. A. patelRformis, Linn. Eddystone Gnds. (M.B.A.) ; 



Falmouth ; off Helford 15 fin. ! Mount's B., 

 Land's End, Wolf Rk. (Miss Carne), Hayle, 

 Scilly (M.). var. itriata Lov. Falmouth 

 (Hockin) 



1 6. Glyctmeris glycimeris, Linn. C. locally on sandy 



a id muddy gravels from just beyond 1. s. t. to 

 40 fm. ; dead shells all round coast to Bude 

 and at Scilly ; live specs, c. on Queen's Gnd., 

 Cawsand B., Rame-Eddystone and Eddystone 

 Gnds. (M.B.A.), Polperro and Gorran Haven ; 

 off the Dodman, in 40 fm. and Falmouth B., 

 1 5 fm. downwards ! Mount's B., 5 to 20 fm., 

 and at Scilly, esp. in 40 fm. on stony ground. 

 v^i.fi/osa Linn. Helford (Hockin) 



17. Limopsis aurita, Brocchi. Two unpaired valves, 



Gorran Haven, 1 6 March, 1904 ! 



1 8. Barbatia lactea, Linn. Irregularly dist. between 



t-m., Plymouth to Bude ; also in 5 fm. 

 Queen's Gnd., Plymouth, in 1 5 fin. Falmouth 

 Harb. ! in 20 fm. and over, Mount's B. ; occ. 

 in 40 fm. dredgings at Scilly 



19. Area letragona, Poli. Rather sparingly dist. 



along S. coast in crevices and among stones 

 from 1. w. downwards ; Hayle r. ; a single 

 valve Harlyn B. (Thelwell) ; at Scilly single 

 valves abund., live specs, occ. on stones from 

 40 fin. 



20. Mytilus eJulis, Linn. Gen. dist. and abund. all 



round coast ; Scilly, but n. c. and always solitary 

 and small, var. ungulata Linn. Hayle (Miss 

 Hockin), St. Minver (Tellam). var. Incurvata 

 Penn. Gorran Haven, Falmouth (Cocks), 

 Newquay, St. Minver (Tellam). var. gallopro- 

 vincialis Lmk., at Par, Falmouth (Cocks), Hel- 

 ford, Hayle (Dennis), var. pellucida Penn, at 

 Falmouth, Maenporth (Dennis) Helford, Hayle 

 and Newquay. var. flava Poli, at Newquay 

 (Miss Hockin). var. pallida Marshall, at St. 

 Austell (Richards), Newquay (James), Forth 

 (Richards) 



21. Vohella modiolus, Linn. Occ. thrown up at Par, 



Falmouth, Helford, St. Minver, and Scilly 



22. V. barbata, Linn. From under boulders between 



t-m. to deep water ; a littoral and shallow 

 water species at Plymouth (M.B.A.) ; 1 5 fm. 

 Falmouth B. ! Mount's B. (Tregelles) ; Pad- 

 stow ! several valves at Bude ! very small specs. 

 dredged outside Menavawr, Scilly, often on 

 sea-weed (S. & C.). 



23. V. adriafica, Lmk. Occ. cast up at Falmouth 



and at Helford, Mount's B. (PenzanceList) and 

 Hayle ; at Scilly, dredged off Menavawr in a 

 nest or case (S. & C.), and occ. cast ashore 

 dead ; var. avails Sow, at Falmouth (Tregelles), 

 Helford (M.R.I.) and Pentle B. Scilly (S. & C.) 



24. V. phaseoltna, Philippi. Occ. alive above 1. w-m., 



but evidently c. locally, from 1 5 fm. downwards ; 

 outside gnds. Plymouth 1 5 to 30 fm. (M.B.A.) ; 

 Fowey Harb.; in 20 fm. Falmouth B. ! 15 to 

 25 fm. Mount's B., Land's End (T. Brown), 

 Wolf Rk. (Baily), Hayle, and a single valve 

 from Harlyn B. (Thelwell) ; from the Mena- 

 vawr dredgings at Scilly small but numerous 

 (C. Jeffreys) 



25. Modlolaria marmorata, Forbes. Chiefly in the 



tests of tunicates at 5 to 25 fm., n. unc. ; 

 abund. in 20 fm. about 2 miles SE. of Looe 

 (Robinson), in 10 to 15 fm. Falmouth B., and 

 occ. in 5 fm. off Helford ! Mount's B., Porth- 

 curnow, Land's End (Hockin), Hayle, Harlyn 

 B. (Thelwell) ; a few single valves at Scilly 



26. M. costulata, Risso. Almost always on sea-weed 



in dredgings and trawl refuse from shallow 

 water to 40 fm. ; dead shells cast up occ. from 

 Falmouth to Hayle ; a single valve at Harlyn 

 B. (Thelwell), 2 at Bude ! in trawl refuse at 

 Mevagissey and Porthloe, in 40 fm. off the 

 Dodman, in 10 fm. off Helford! deepish water. 



C "IT 



Scilly 



27. M. discors, Linn. Among short sea-weed between 



t-m., and occ. in trawl refuse ; Gorran Haven ! 

 Falmouth, gen. dead shells ; c. Helford (James), 

 Mount's B. ; Porthcurnow (Miss Hockin) 

 WolfRk. (Baily); Harlyn B., 4 specs. (Thel- 

 well) ; Bude, 3 valves ! St. Mary's, Scilly, 

 between t-m. var. semi/aevis Jeff, obtained by 

 Burkill at Penzance 



[M. discrepans, Leach. Spec, in the museum of 

 the Royal Institution of Cornwall, labelled 

 ' Whitsand Bay '] 



28. Crenella rhombea, Berk. Evidently always from 



deep water ; Mount's B. (Penzance List) ; 

 dredged 20 m. off Penzance (McAndrew) ; 

 Land's End ; Harlyn B. I spec. (Thelwell) ; 

 at Scilly single valves dredged in sand at 40 fm., 

 r. and local (S. & C.) 



29. Pteria hirundo, Linn. Off the Eddystone ; taken 



from offing at Plymouth (M.B.A.) ; Falmouth 

 (Hockin) 



PSEUDOLAMELLIBRANCHIA 



30. Pinna fragilis, Pennant. From the Zostera zone 



down to 40 fm. ; dead shells n. unc. ; small 

 specs, occ. on gravel in 20-30 fm. off Rame 

 Hd. (M.B.A.) ; deep water off Polperro ! 

 abund. 6 or 8 leagues S. of the Dodman (J. C.), 

 off Gorran Haven ! small specs, c. in 15 fm. 

 Falmouth B. ! a few among Zostera in hark off 

 the Lizard (R.Q.C.); Mount's B.; Land's End; 

 Hayle, a few valves ; a few among the Zoster.i 

 beds SW. of Tresco 



31. Ostraea edulis, Linn. Gen. dist.; cultivated in 



the Tamar, Falmouth Harb. and the Helford 

 river. At Scilly odd valves occ. Twenty or 

 twenty-five years ago an attempt was made to 

 introduce it there, but without success, var. 

 parasltica Turton, c. about Polperro (J. C.) ; 

 Gorran Haven ! Falmouth (V.) Helford ! var. 

 defirmis Lmk. Par (Marshall) and Hayle (Miss 

 Hockin) 



32. Pecten maximus, Linn. Irregularly dist. round 



coast from Zostera beds down to at least 30 

 fm. ; gen. c. ; locally abund. Scilly 



33. P. (Hinnites) push, Linn. Gen. dist. round the 



coast, n. c. from 1. w. to 40 fm. ; young specs, 

 dredged on gravel off Menavawr, Scilly (S. & C.) ; 

 a few adult valves in Forth Cressa B. ! 



141 



