194 MARINE MOLLUSCA ; PELECYPODA. 



M. bidentata (Mont.). Gen. dist. but usually dead. 



M. tumidula, Jeff. r. ; Tarbert 25 f.: L. Eanza 55 f. : Skelmorlie 18 f. : Arran 

 25 f. (Som.) : L. Fyne 25-56 f. (S. K.). 



Tellimya [ = Montacuta] ferruginosa (Mont.). Widely dist. but scarce and 

 rarely perfect ; Millport (N. R.) : Lamlash B. (A. L.): Inveraray (Bar.): 

 Ardrishaig 6 f.: Garrocli Hd. (B.): Kyles 5-20 (Som. C.K.): Pirnmill 21 f. : 

 bet. Ailsa and Corsewall 60 f. : Canipbeltown 23 f. : Strachur 25 f. : 

 Arrochar 12 f. (K.). 

 var. ovata, Mar. Kyles of Bute 18 f. (K.). 



Diplodonta rotundata (Mont.). Very r. ; Horse I., Ardrossan, 2 valves (C.). 



Fam. Leptonidae. 



Kellia suborbicularis (Mont.). Gen. dist. but rather scarce. 

 Lasaea rubra (Mont.) c., but somewhat local ; among corallines. 



var. pallida, Jeff. Clachland Pt. (N.): Millport (Som. C.): E. L. Tarbert 



(Som. S. B.). 



[Lepton scLuamosum (Mont.). Clyde 15 f. (d.) (F.).] 



L. nitidum, Turt.Not c., local ; Lamlash Bay 10-20 f . (N. H. Som.) : off 

 Silvercraigs : Otter Spit : Cumbrae (<): Craigmore (d.)(E.) : Sunidale B. : 

 Tarbert (S.): L. Ranza 18 f. : Skelmorlie 7-18 f. (Som.): bet. Sanda and 

 Mull of Kintyre 19 f. : off Mull of Kintyre 9 mis. 55 f. (K.). 

 var. convexa, Aid. Lamlash (L.). 

 var. lineolata, Je/.L. Fyne (M'Nab). 

 L. clarkiae, Cl. Sanda I. 19-25 f. valves (K.) 



Fam. Scrobiculariidae. 



Syndosmya [ = Scrobicularia] prismatica (Mont.). Very scarce ; Lamlash B. 

 25 f. (L. H. Som. K.) : Cumbrae (R.): Machrie B. 20-29 f. (K.) : Ardrishaig 

 6 f. rather c. : L. Goilhead : Rothesay (d.)(B.): Brodick (Som): Kyles 

 5-28 f. : Skipness (C.). 



S. nitida (Mull.). Widely dist., but local ; L. Fyne 50 f. (F. N. Som. (75 f.) 

 M. (80-90 f .) R.) : Portincross abundant juv. 30-44 f . : Brodick 40 f . : 

 Skelmorlie 10 f. : Cumbrae 25 f. : Kilbrennan Sd. 70 f. (Som.) : Machrie 

 B. 20-29 f. : 6 mis. off Davaar 23 f. : Ailsa 27 f. : inside Sanda 25 f. : 

 Strachur 25-36 f. : Arrochar 8-24 f. (K.) : Inchmarnock 50-80 f . (Hoy. K.) 



S. alba (Wood.). Abund. locally, esp. in Gareloch (K.) and L. Gilp. (B.). 

 var. oblonga, Mar. Arran 30 f. (Mar.): Arrochar (l"x") (K.). 



S. tenuis (Mont.). Very r. ; Clyde (Sm.) : L. Goil (Hoy.): Kyles (C.). 



Scrobicularia plana (da C.) [=piperata] r. ; Ayr (Sm.) : Ardeer to Irvine 

 (Sth.) : Corriegills (L.) : Bute (N.) : Fairlie : Cumbrae (R.). 



Fam. Tellinidae. 



Tellina crassa (Gm.). Scarce ; Ayr (Sm.) : Ardeer to Irvine, (d.) (Sth.) : 

 Clyde 40 f. (d.) (F.) : Cumbrae (N. R): Lamlash B. (L.): nr. Sanda I. 12 

 valves, 40 f. (Hy.) : Machrie B. (d.)(K.) : Sunidale B. (d.) (S.) : one on Tan 

 Spit : one off Silvercraigs (B.) : Canipbeltown L. 8-22 f. : Dunoon basin 

 10-20 f. (M.). 



T. squalida, Pult.r. ; Ayr : Bute (Sm.) : Lamlash B. (A. L. N. H.) : Brodick : 

 L. Fyne (d.) (Som.) : Cumbrae (R.) : Scalpsie B. 10 f. (d.) (C.). 



T. donacina, L. Gen. dist., but not c. 



T. pusilla, Phil. Very r. ; Clyde 5-20 f. (d.) (F.): off Sanda I. 26 f. (K.). 



T. tenuis, da. C. Very c. 



T. fabula, Gron. c., but somewhat local. 



Macoma [ = Tellina] balthica (L.) [= var. attenuata] Canipbeltown : L. Gilp- 



head : Cumbrae (B.). 



var. carnaria, Penn. [ = balthica] c., but somewhat local, seems to be de- 

 creasing in abundance. 



