MARINE MOLLUSCA; PELECYPODA. 195 



Fam. Donacidae. 



Donax vittatllS (da C.}. Scarce, Clyde (Sm. L.) : Ardeer to Irvine freq. 

 (Sth.) : Kames B., Cumbrae, one living, one dead (M. R.): Saltcoats 

 (Som.) : Ardrossan to Ayr (C.). 



Fam. Mactridae. 



Mactra Stultomin, L. Note.; Ayr (Sin.): Ardrossan : Saltcoats : Irvine (C.), 

 bet. Ardeer and Irvine freq. (Sth.) : Lam lash B. (L.) : Machrie B., fresh 

 but (d.) (Som.). 



var. cinerea, Mont. Ayr (Sm.) : Lamlash (L.). 

 Spisula [ = Mactra] solida (L.). By no means c.; Bute (Sm. N. B.): Lamlash 



B. : off Holy I. (G. & M., H., Sv.) : Cumbrae (N.). 

 var. truncata, Mont. c. in Bute and Cumbrae. 

 S. elliptica (Broivri). c., and widely dist. 



S. subtruncata (da C.}. Very abund. on certain sandy shores, e.g. Ettrick 

 and St. Ninian's Bs., Bute : Kames and Fintry Bs., Cumbrae : Troon : 

 Kilbride B. Ardlamont : Lamlash. 



var. striata, Brown. Lamlash 2-5 f. (H.) : Troon (K.). 

 Lutraria elliptica, Lmk. c. 



Fam. Veneridae. 



Lucinopsis undata (Penn). Gen. dist., but not c. 



var. aequalis, Jeff. L. Fyne : Kyles (d.) (C.). 

 Dosinia [ = Venus] exoleta (L.\ Abund., and widely dist. 

 D. lupina (L.) [=lincta] Less c. than the preceding. 



var. compta, Lov. Cumbrae (R.). 

 Venus (Clausinella) fasciata (da C.). Freq. 



var. radiata, Jeff. Ettrick B., Bute (C.). 

 V. (Ventricola) casina, L. Widely dist., but not c. 



V. (Ventricola) verrucosa, L. r.; Lamlash (L.) : one living off Garroch Hd. 

 from fisherman's lines (R.') : single and much worn valves (B.) : Ardeer to 

 Irvine (Sth.). 

 V. (Timoclea) ovata, Penn. Very c., and gen. dist. 



var. trigona, Jeff. Tarbert 25 f. (Mar.). 

 V. (Chamelaea) gallina, L. Very c. 



var. laminosa, Mont. Clyde c. (B.) : Machrie B. 20-29 f. : Lamlash B. 



22 f. : Kyles 20 f. (K.). " 



var. gibba, Jeff. Clyde c. (B.) : Scalpsie B. 10 f. : Kyles 5-28 f. (C.). 

 var. alba. St. Bride's B. (Som.). 

 [Tapes aureus (Gm.). Very r. ; Ayr (Sm.): Ardeer to Irvine (Sth.): 



Arran (L.).] 

 T. virgineus (L.). Freq. and widely dist. 



var. sarniensis (Turt.). Not c. ; Balloch B., Cumbrae (R.) : Kyles (C.). 

 T. pullastra(J/o?*Z.). Abund. 



var. perforans Mont. Freq. ; Lamlash B. (N.) : Campbeltown (B.) : 



Corriegills (Som.) : Kyles (C.). 

 var. plagia, Jeff. L. Fyne (Bar.). 



T. decussatus (A). Scarce and local : Holy I. (G. & M.) : Campbeltown, 

 large and abund. (R.) : Rothesay, scarce (B.) : off Sanda 19 f. : L. Goil 

 (M.) : Irvine (C., Sth.). 



Gouldia [ = Circe] minima (Mont.). Widely dist., not unc. 

 [Iras [ = Venerupis] irus (L.). Very r., Brodick (Sv.).] 



Fam. Cardiidae. 



Oardium aculeatum, L. Very r., N. says Sm. is wrong in saying that it is 

 "common" ; Kilbrennan Sd. 22 f. (Hoy.): nr. Carradale 18-28 f. (M.). 



