COLLIER : ON THE MOLLUSCA OF CARDIGANSHIRE. 355 



Z. nitidulus Drap. — Aberystwyth ; ruins of Strata Florida 



Abbey. 

 Z. purus Alder. — Ruins of Strata Florida Abbey, one only, 



immature. 

 Helix aspersa Miill. — Borth, Aberystwyth, Aberayron, and 



ruins of Strata Florida Abbey. Most of these shells were 



very much eroded, some, though alive, having hardly any 



epidermis left. Might not this be caused by last year's dry, 



sunny weather, as all the mature shells would be last year's 



growth ? 

 H. aspersa var. minor Moq. — Aberystwyth, a few, but not 



very good specimens. 

 H. aspersa var. conoidea Picard. — Aberystwyth. 

 H. aspersa var. undulata Moq. — Aberystwyth. 

 H. aspersa var. nigrescens Moq. — Aberayron, one only. 

 H. nemoralis L. — Aberystwyth, a few only. 

 H, nemoralis var. olivacea Gassies. — Aberystwyth, most of 



nemoralis were of this variety. 

 H. concinna Jeff — Ruins of Strata Florida Abbey. 

 H. virgata DaCosta — Castle Grounds, Aberystwyth, one only. 

 H. caperata Mont. — All along the coast wherever I looked; 



Borth, Aberystwyth, Aberayron. 

 H. caperata var. ornata Picard. — Aberayron, a few. 

 H. caperata var. fulva Moq.— Aberayron, plentiful, but not 



very large. 

 H. rot un data Miill. — Aberystwith, ruins of Strata Florida 



Abbey, Devil's Bridge ; a few. 

 H. rotundata var. alba Moq.— Devil's Bridge, one only.- 

 Pupa umbilicata Drap. — Aberystwyth, ruins of Strata 



Florida Abbey. 

 Clausilia rugosa Drap. — Ruins of Strata Florida Abbey. 

 Cochlicopa lubrica Miill. — Aberystwyth, ruins of Strata 



Florida Abbey. 

 C. lubrica var. lubricoides Fer. — Ruins of Strata Florida 



Abbey. 



