THE CLYDE DRAINAGE AREA AT LOW LEVELS. 537 



t Nucula nitida, G.B. Sow. Paisley ; Garvel Park ; (R-B., Largs). 



t N. tenuis Mont. Frequent in the glacial beds. 



N. tenuis, var. expansa, Reeve. Cumbrae College. 



N. tenuis, var. inflata, Morch. Paisley ; Garvel Park. 



N. nucleus, L. Paisley ; Lochgilp. 



N. nucleus, var. tumidula, Malm. Paisley. 



N. nucleus, var. radiata, F. and H. Garvel Park. 



* * Leda pernula, Mull. Common in the glacial beds. 



L. pernula, var. mucilenta, Steen-st. Troon ; Garvel Park ; Paisley ; Kil- 

 chattan ; Gourock. 



* L. pygmaea, Miinst. Frequent in the glacial beds. 

 L. pygmaea, var. gibbosa, Smith. Cumbrae College. 



L. pygmaea, var. lenticulata, Mull. Garvel Park ; Paisley ; Kilchattan. 



* * L. arctica, Gray. Lucknow ; Troon ; Garvel Park. 

 L. limata, Say. Garvel Park. 



* t L. minuta, Miill. Bute. 



+ L. frigida, Torell. Garvel Park. 



* Pectunculus glycymeris, L. (R-B., Shewalton). 



t Lepton nitidum, Turt. Garvel Park ; Lochgilp ; (R-B., Shewalton ; 



Largs). 

 t Montacuta bidentata, Mont. Garvel Park ; Gourock ; Dalmuir ; (R-B., 



Shewalton). 



t M. elevata, Stimp. Lochgilp ; Tangy Glen. 

 tM. ferruginosa, Mont. Kilchattan ; (R-B., Shewalton). 

 t M. substriata, Mont. 

 t Lucina borealis, L. Troon; Garvel Park; (R-B., Shewalton; Largs; 



Cumbrae). 



L. spinifera, Mont. (R-B., Shewalton). 

 t Axinus flexuosus, Mont. Frequent in the glacial beds ; (R-B., Largs ; 



Shewalton). 

 A. flexuosus, var. Gouldii, Phill. Paisley ; Lochgilp ; Garvel Park ; Kyles 



of Bute ; Kilchattan. 

 t A. ferruginosa, Forbes. 



tCyamium minutum, Fabr. Garvel Park ; (R-B., Shewalton ; Largs). 

 tCardium norvegicum, Speng. Stevenston ; Garvel Park ; Lucknow ; 



Cumbrae College ; (R-B., Shewalton ; Cumbrae). 



C. fasciatum, Mont. Frequent in the glacial beds ; (R-B., Shewalton). 

 tC. exiguum, Gmelin. Dalmuir; Garvel Park ; Bute ; (R-B., Shewalton). 

 tC. nodosum, Turt. (R-B., Shewalton). 



*tO. edule, L. Frequent in the glacial beds ; (R-B., Shewalton). 

 tC. echinatum, L. Frequent in the glacial beds. 

 tC. aculeatum, L. Stevenston. 

 t C. minimum, Phill. 

 tlspcardia cor, L. 



Axinopsis orbiculata, G. 0. S. Garvel Park. 



*tCyprina islandica, L. Common in the glacial beds ; (R-B., Shewalton). 

 *t Astarte sulcata, Da Costa. Garvel Park ; Old Mains ; Paisley ; Loch 



gilp ; Kyles of Bute ; Troon. 

 A. triangularis, Mont. Garvel Park. 

 *t A. elliptica, Brown. Garvel Park ; Dalmuir ; Lochgilp ; Croftamie 



Troon ; Misk. 



*tA. compressa, Mont. Common in the glacial beds. 

 A. compressa, var. globosa, Mull. Garvel Park ; Paisley. 

 A. compressa, var. striata, Mull. Paisley ; Garvel Park. 

 **A. borealis, Chem. Frequent in the glacial beds. 

 A. crebricostata, Forbes. Dalmuir ; Bute ; Garvel Park. 

 tCirce minima, Mont. (R-B., Largs). 



