292 Proceedings of the Royal Physical Society. 



Species obtained from the Largo Beds. 



Chiton cinereus, L. 

 Patella vulgata, L. 

 Pilidium fulvum, Miill. 

 Helcion pellucidum, L. 

 Tectura virginea, Mont. 

 Emarginula fissura, L. 

 Trochus cinerarius, L. 



,, helicinus, Fabr. 

 Lacuna divaricata, Fabr. 



,, pallidula, Da Costa. 



,, ,, var. neritoides, L. 



Littorina littorea, L. 



,, ohtusata, Gmel. 



,, rudis, Maton. 



,, ,, var, yw^fo^a, Mont. 



,, saxatilis, Johnst. 



,, tenebrosa, Mont. 

 *Rissoa abyssicola, E. F. 



* ,, alhella, Lov. 



* ,, inconspicua, Aid. 

 ,, parva, Da Costa. 



,, ,, var. discrepans, E. F. 



,, ,, var. interrupta, Ad. 



,, reticulata, Mont. 

 ,, striata, Ad. 

 ,, vitrea, Mont. 



* ,, zetlandica, Mont. 

 *Barleeia rubra, Mont. 

 Hydrohia ulvce, Penn. 

 Slcenea planorhis, Fabr. 

 Homalogyra atomus, Phil. 

 Ccecum glabrum, Mont. 

 Turritella terebra, L. 

 Aclis unica, Mont. 

 Odostomia acuta, Jeffr. 



elavula, Lov. 

 conoidea, Broc. 

 interstincta, Mont. 

 obliqua, Aid. 

 pllcata, Mont. 

 spiralis, Mont. 

 turrita, Hanley. 

 truncatula, JefFr. 

 umbilicatula, Malm. 

 *{Chemnitzia) lactea, L. 



* ,, rufa, Phil. 

 Natica catena, Da Costa. 



,, Alderi, E. F. 



Aporrhais pespelicani, L. 

 Purpura lapillus, L. 



,, ,, var. imbricata, Lamk. 



Buccinum undatum, L. 

 Nassa incrassata, L. 

 Pleurotoma costata, Don. 

 Cylichna urnbilicata, Mont. 

 Utriculus obtusus, Mont. 



,, Lajonkairii, Bast. 



,, truncatulus, Brug. 

 Anomia ephijjpium, L. 



,, patelliformis, L. 

 Ostrea edulis, L. 

 Pecten opercularis, L. 

 ,, pusio, L. 

 ,, varius, L. 

 Mytilus Adriaticus, Lamk. 



,, edulis, L. 

 Nucula nitida, Sow. 



,, nucleus, L. 

 Montacuta bidentata, Mont. 



,, ferruginosa, Mont. 

 Lasea rubra, Mont. 

 Lucina borealis, L. 

 *Loripes lacteus, L. 

 Axinus flexuosus, Mont. 

 Cardium edule, L. 



,, fasciatum, Mont. 

 Diplodonta rotundata, Mont. 

 Cyprina islandica, L. 

 Venus casina, L. 

 ,, ovata, Penn. 

 ,, striatula, L. 

 Tapes pullastra, Mont. 



,, virginea, L. 

 Artemis lincta, Pult. 

 Tellina baltliica, L. 



,, fahula, Gron. 



,, tenuis. Da Costa. 

 Psammobia ferroensis, Chemn. 

 Mactra soUda, L. 



,, ,, var. elliptica, Br. 



,, stidtorum, L, 



,, subtrimcata, Da Costa. 

 Lutraria elliptica, Lamk. 

 Scrobicularia piperata, Gmel. 

 Syndosmya alba, W. Wood. 

 ,, tenuis, Mont. 



