540 THE POST-DRIFT FOSSILS OF 



Trochus nit ens, Phill. 



tT. Montacuta, W. Wood. 



t T. zizyphinus, L. 



Molleria costulata, Moll. Misk ; Garvel Park ; (R-B., Shewalton). 



Margarita cinerea, Couth. Bute ; Rothesay. 



M. olivacea, Brown. Clyde Beds. 



t Lacuna divaricata, Fabr. Frequent in the glacial beds ; (R-B., Shewal- 

 ton ; Cumbrae ; Largs). 



L. divaricata, var. quadrifasciata, Moulf. Dalmuir. 



L. puteolus, Turt. Dalmuir : Paisley ; Garvel Park ; Cumbrae Coll. ; (R-B., 

 Shewalton). 



L. pallidula, Da Costa. Lochgilp ; Dalmuir ; (R-B., Cumbrae). 

 var. neritoidea, Gould. Dalmuir. 



t Littorina littorea, L. Common in the glacial and Raised-Beach beds. 



t L. rudis, Maton. Common in the glacial (and R-B.) beds. 



t L. rudis, var. saxatilis, John. Garvel Park ; (R-B., Shewalton). 



t L. rudis, var. patula, Jeff. Dalmuir ; Bute ; Troon. 



t L. obtusata, L. Frequent in the glacial beds ; (R-B., Cumbrae). 



L. obtusata, var. neritiformis, Brown. E. Tarbert. 



L. limata, Loven. Jordanhill ; Garvel Park ; Dalmuir ; E. Tarbert ; Misk ; 

 Paisley ; Lochgilp. 



L. squalida, Brod. and Sow. Paisley. 



t L. neritoides, L. 



t Rissoa violacea, Desw. Lochgilp ; (R-B., Shewalton ; Cumbrae). 



R. violacea, var. ecostata, Jeff. (R-B., Shewalton). 



t R. striata, A dams. Frequent in the glacial (and R-B.) beds. 



R. striata, var. arctica, Loven. Garvel Park ; Paisley. 



R. lactea, Mich. (R-B., Shewalton). 



t R. parva, Da Costa. Garvel Park ; Duntroon ; Paisley ; (R-B., Shewalton ; 

 Cumbrae). 



R. parva, var. interrupta, Adams. Frequent in the glacial beds ; (R-B., 

 Shewalton). 



t R. abyssicola, Forbes. (R-B., Shewalton). 



t R. soluta, Phill. Paisley ; (R-B., Shewalton). 



R. inconspicua, Alder. Jordanhill ; (R-B., Shewalton). 



R. inconspicua, var. ventrosa, Mont. Dalmuir. 



t R. cingillus, Mont. Dalmuir ; (R-B., Largs). 



tR. membranacea, Adams.- Bute ; (R-B., Shewalton ; Largs). 



R. membranacea, var. minor, Jeff. (R-B., Shewalton). 



**R. arenaria, M. and A. Garvel Park. 



t R. reticulata, Mont. Lochgilp ; Paisley ; Garvel Park ; (R-B., Shew- 

 alton : Cumbrae). 



t R. cancellata, Da Costa. Lochgilp. 



t R. striatula, Mont. Lochgilp ; (R-B., Shewalton ; Largs). 



R. costata, Adams. Garvel Park ; Largs ; (R-B., Shewalton ; Curnbrae). 



tR. punctura, Mont. (R-B., Shewalton). 



t R. calathus, F. and H. 



t R. vitrea, Mont. (R-B., Largs). 



tR. fulgida, Adams. 



t R. zetlandica, Mont.- 



tBarleeia rubra, Mont. 



Menestho albula, Fabr. Paisley. 



t Hydrobia ulvae, Penn. Dalmuir ; Garvel Park ; Paisley ; (R-B., Shew- 

 alton ; Cumbrae). 

 t Jeffreysia opalina, Jeff. 

 t J. diaphana, Jeff. 

 t Skenea planorbis, Fabr. Frequent in the glacial (and R-B.) beds. 



