MARINE ZOOLOGY 



PELECYPODA {conHmed) 

 Arcidae (continued) 



Area tetragona, Poli. occ. on all rocky shores, in 

 crevices and among stones, l.w. — 3ofms. ; 

 Teignmottth Bay, on O. edule (F. and H.) 



Mytilidab 



Mytllus edulis, L. Gen. dist. from h.w.m. to a few 

 fms ; c. on piles and hulks moored in P/ymouti 

 Sound, etc. Large quantities taken annually for 

 food and bait from large mussel beds in 

 estuaries of Teifft and Exe ; young mussels 

 I mm. in length v.c. on Enteromorpha in the 

 Exe during July and Aug., 1 90 1 (M.B.A.) 



Modiolus modiolus (L.). Salcombe, occ. (M.B.A.) 



— barbatus (L.). Plymouth Sound, occ. under stones 



on shore (M.B.A.) ; Torbay, r. ; Exmouth 

 (F. and H.) ; Teignmouih Bay, r. (L.B.) 



— adriaticus (Lam.). Dartmouth; Exmouth; Tor- 



quay (F. and H.) ; Teignmouth Bay (L.B.) n.c. 



— phaseolinus (Ph.). f.c. 1 5—30 fms. ; occ. on shore. 



Plymouth (M.B.A.) 

 Modiolaria marmorata (Fb.). Gen. dist. in the 

 tests of Ascidians 



— costulata (Risso). Exmouth (F. and H.) 



— discors (L.). (F. and H.) 



Crenella rhombea (Berkeley). (F. and H.) 



Pteriidae 



Pteria hirundo (L.). v.r. in 35 fms. off Plymouth ; 

 not recorded for some years 



Pinna fragilis, Penn. Plymouth, 20-30 fms., small 

 specimens occ. (M.B.A.) ; Torquay, very large 

 (F. and H.) ; Teignmouth Bay, large living 

 (L.B.) ; c. about zo miles south ofS/ar/ /"«»/, on 

 ' Caperlonger ' ground (J. Tucker) 



OsTREIDAE 



Ostraea edulis, L. Gen. dist., n.c. in all estuaries. 

 Beds in the Tamar and Tealm ; c. in Teignmouth 

 Boy, wrhere oyster dredging is carried on. Var. 

 parasitica, Teignmouth Bay (L.B.) 



Pectinidae 



Pecten maximus (L.). Gen. dist., n.c, in 1 5-3 S fms. ; 

 v.c. on gravelly grounds ; occ. on shore ; Sal- 

 combe Estuary and Tealm c. in wrinter (M.B.A.) 



Hinnites pusio (L.). f.c. on all rocky shores among 

 stones, shells, etc., l.wr. — 30 fms. 



Chlamys varius (L.). Plymouth Breakwater, f.c. ; 

 Plymouth Sound; Tealm; Salcombe; Start Bay 

 (M.B.A.) ; Teignmouth Bay (L.B.) 



Aequipecten opercularis (L.) Plymouth to Exmouth, f.c. 

 everywhere, 15-30 fms., especially in certain 

 localities ; Eddystone Grounds, etc., sometimes 

 in great abundance in patches, occ. on the 

 shore, Salcombe. Var. lineata ; off Plymouth, 

 Teignmouth, etc. Breeding, vi-viii (M.B.A.) 



Palliolum tigerinus (O.F.M.). Plymouth, m.c. on 

 coarse muddy or sandy gravel ; occ. on Plymouth 

 Breakwater (M.B.A.) 



— incomparabilis (Risse). Exmouth (J.G.J.) 



— striatus (O.F.M.). Plymouth Q.G.J.) 



— similis (Laskey). Torbay; Plymouth, 25 fms. 



PELECYPODA {continued) , 



LiMIDAE 



Lima subauriculata (M.). Plymouth, 25 fms. (F. and H.) 



— loscombii (Sb.). Plymouth (M.B.A.) ; Exmouth 



(F. and H.) 



— hians (Gm.). Abundant in small patches of stones 



at l.w.s.t., on the north side of Plymouth 

 Breakwater ; occ. between tidemarks on the 

 Reny Rocks (M.B.A.) 



Kelliellidae 

 Turtonia minuta (F.). Exmouth 



ASTARTIDAE 



Astarte sulcata (D.C.). Plymouth, i.e. in 15-30 fms., 

 especially on muddy or sandy gravel (M.B.A.) 



Goodallia triangularis (M.). Plymouth ; Exmouth 

 (F. andH.) 



Arcticidae 



Arctica islandica (L.). Plymouth, occ. in 15— 30 fms., 

 gen. with Malacobdella grossa (M.B.A.) ; Teign- 

 mouth Bay, occ. Var. crassa, Jeff. ; Teignmouth 

 Bay (L.B.) 



LUCINIDAE 



Loripes lacteus (L.). Torbay (F. and H.) 

 Divaricella commutata (Ph.). Teignmouth Bay (J.G.J.) 

 Lucina spinifera (M.). Plymouth, 15—30 fms., shells 

 m.c. (M.B.A.) ; Dartmouth, 27 fms. ; Plymouth, 

 28 fms. ; Torquay, Salcombe {V. and H.) 



— borealis (M.). Tealm sandbank occ. ; Salcombe 



Zostera bed, f.c. (M.B.A.); Exmouth (F. and H.) 

 Cryptodon flexuosus (M.). Tealm sandbank occ. ; 

 Salcombe, f.c. In sand and Zostera (M.B.A.) ; 

 Dartmouth, 9 fms. ; Exmouth ; Torbay (F. and 

 H.) ; Teignmouth Bay, f.c. in mud (L.B.) 

 Montacuta substriata (M.). f.c. attached to spines of 

 Spatangus purpureus (M.B.A.) ; deep water 

 among corallines, Exmouth (F. and H.) 



— bidentata (M.). Salcombe (F. and H.) ; Teign- 



mouth Bay in mud (L.B.) 

 Tellimya ferruginosa (M.). Commensal with Echino- 



cardium cordatum, Tealm and Salcombe (M.B.A.) ; 



Dartmouth, 7 fms. (F. and H.) ; Teignmouth 



Bay, dead (L.B.) 

 Diplodonta rotunda (M.). Shells f.c. Plymouth to 



Exmouth (M.B.A.) ; living specimens scarce, 



Exmouth ; Plymouth (F. and H.) ; Teignmouth 



Bay (L.B.) 



Leftonidae 



Kellia suborbicularis (M.). f.c. l.w. — 30 fms., in rock 

 crevices, Pholas borings, and dead bivalve shells, 

 and especially where there is a certain amount of 

 silt. Var. lactea, Exmouth, in Pholas borings 

 with type (L.B.) 



Lasaea rubra (M.). Abundant on all rocky shores, in 

 crevices and amongst barnacles, Dartmouth, 

 7 fms. (F. and H.). Var. pallida, Tei^mouth 

 Bay (L.B.) 



Lepton squamosum (M.). Salcombe, commensal with 

 Gebia (N.) ; Plymouth, 28 fms.; Exmouth ; 

 Torbay (F. and H.) 



— nitidum (Turt.). Var. lineolata, Exmouth ; var. 



pisidialis, Torbay (J.G.J.) 



— clarkiae, Clarke. Exmouth ; Plymouth; Torquay 



(J.G.J.) 



149 



