200 MARINE MOLLUSC A ; GASTROPODA. 



Alvania [ = Rissoa] cancellata (da C.). Very r. ; Lamlash(L.): L. Fyne(Bar.): 

 Ayr (Sni.). 



A. reticulata (Mont.). Very abund. (d.\ scarce (L}. 



var. calathus (F. & H.\ [ = R. calathus]. Cumbrae (Sm.): Lamlash (L.): 



Kyles 20 f. (Som.): r. 



var. cimicoides, Forb, [=R. cimicoides]. r.; L. Fvne (N.): Tan Spit, 7-10 

 f. (Som.). 



A. punctura (Mont.). Locally plentiful. 



A. SUbsoluta var. abyssicola, Forb. [ = R. abyssicola]. Scarce, local: 

 L. Fyne 100 f.: L. Kanza 60 f. (M'A. & F. N. Som. R.) : Cumbrae (L.): 

 Portincross 30 f . : Kyles: Kilbrennan Sd. 55-70 f. : Catacol 25 f.: Cumbrae 

 15-65 f.: Tarbert 50-75 f. (Som.): Machrie B. 20-29 f.: Kyles 23 f.: Pirn- 

 mill 73 f.: Campbeltown 23 f.: 6 mis. off Davaar 23 f.: Ailsa Craig 27 f.: 

 Strachur 8-36 f. (K.): Tarbert 50 f. (S.). 



Manzonia [ = Rissoa] zetlandica (Mont.). Scarce : Lamlash : Bute (L.): L. 

 Fyne (N.): Tan 15-30 f. (d.): Silvercraigs 20 f. (d.) (B.): Tarbert Bank (S.): 

 Cumbrae 20 f. (Mar.): Tan 7-1 f. : Skelmorlie 7-18 f. : Lamlash: L. Cumbrae 

 40 f. (Som.): off Mull of Kintyre 9 mis. 55 f.: inside Sanda 25 f. (K.). 



M. COStata (./. Ad.). r. and gen. (d.); Ayr: Bute (Sm.): Lamlash (L. N. B.). 



Zippora [ = Rissoa] membranacea (J. Ad.), [ = membranacea, var. elata]. 



Cumbrae (R. Som.): E. L. Tarbert (S.): Lamlash (N.). 

 var. labiosa, Mont. [ = membranacea]. Not unc. and widely dist. 



Onoba [ = Rissoa] striata (J. Ad.). Very abund. 

 var. Candida, Brown. Skipness (Som.). 

 var. aculeus, Gould [ = arctica]. (d.) c., rarer (L); Arran (Som.): Kyles 



20 f. (K.). 

 var. distorta, Mar. Bet. Sanda and the Mull 19 f. : inside Sanda 25 f. (K.). 



Ceratia [= Rissoa] proxima, Aid. Very r.; Machrie B. 20-29 f.: off Mull of 

 Kintyre 9 mis. 55 f.: inside Sanda 25 f. (K.): Lamlash 12-15 f. (H. Som.): 

 Brodick 40 f. (Som.). 



Hyala [ = Rissoa] vitrea (Mont.). Local and r. ; Lamlash (L.): Ayr (Sm.): 

 Largs 20-25 f. (R.): Portincross 30-44 f.: L. Cumbrae, 15-65 f.: Millport 

 7 f.: Kilbrennan Sd. 55 f. (Som.): Machrie B., 20-29 f.: bet. Ailsa and 

 Corsewall 60 f. (K.). 



Setia [ = Rissoa] fulgida (J. Ad.). Scarce: Kames Bay: Lamlash (N. L.): 

 Cumbrae (B.): Skipness (Som.). 



S. obtusa (Cant.\ [ = soluta]. Local, but not r. 



Cingula [= Rissoa] semistriata (Mont.).-r.; Lamlash (L.): Cumbrae (R.): 

 bet. Sanda and the Mull 19 f.: off Mull of Kintyre 9 mis. 55 f.: inside 

 Sanda 25 f.: Gareloch 16-23 f. (K.). 



C. trifasciata, J. Ad. [ = cingillus]. Not unc. throughout the district. 



Galeodina [ = Rissoa] carinata, da 0. [ = striatula]. r.: Cumbrae: Arran 

 (Sm. L.): Lamlash (N. Som.): Ayr (Sm.): Girvan: St. Ninian's Bay (R.): 

 Silvercraigs 12 f. (d.) (B.). 



[Barleeia rubra (Mont.\ Lamlash B.: Bute (L.): "requires confirmation" 

 (J.).] 



Fam. Assimineidae. 



Paludestrina [ = Hydrobia] stagnalis (Bast.). [ = ulvae]. Widely dist. on mud 



flats ; pools on Burnt Islands, Kyles of Bute : Horse I. Ardrossan (K.). 



var. barleei, Jeff.L. Fyne 70 f., r. (M'A.): Faslane B. Gareloch 16-23 f. (K.). 



Fam. Jeffreysiidae. 



Jeffreysia diaphana (Aid.). Abund. on Outer Allans (N.): Brodick (Som.): 



Battery Pt., Cumbrae, scarce (B.). 

 J. opalina, Jeff. Somewhat c. off Shellbole B., Cumbrae : and Battery Pt. (B.): 



Outer Allans abund. (N.). 



