TOURXAL OK CONCHOI.OOY, VOL. I5, NO. 3, JULY, I916. 



GiBBULA CINERARIA Linn^CUS. 



Trochus chierariiis Linnaeus : Syst. Nature, 1758, ed. x., p. 758. 

 Giblmla cineraria Tryon: Man. Conchology, 1887, vol. xi., part 3, 

 p. 208. 

 Distribution — ■ 

 Recent 



Post Glacial ^ 

 Glacial V 



Red Crag j 

 Scaldisian 

 Lenham Beds... 

 Collectio7is — 



M.P.G., No. 472. 

 B.M. (Prestwich). 

 Calliostoma zizyphinum Linnaeus. 



Trochus zizyphimis Linnaeus : Syst. Naturge, 1758, ed. x., p. 759. 

 Calliostoma zizyphifiujtiVWshry (Tryon): Man. Conchology, 1890, 

 vol. xi., part 4a, p. 3S8. 

 Distribution — 



... British and Mediterranean Seas 



Britain 



..British and European Seas 



Britain 



Belgium 

 Britain. 



Belgium 



Britain 



Belgium. 



Recent 

 Red Crag 

 Scaldisian 

 Coralline Crag 

 St. Erth Beds 

 Box Stones 

 Lenham Beds 

 Diestian . 



Collections — 



M.P.G., No. 471. 



B.M. (Graham Wallas). 



Ampullotrochus miliaris Brocchi. 



Trochus miliaris Brocchi: Conch. Foss. Subapennina, 1814, vol. 



2, pi. 6, fig. I, p. 353. 



Ampullotrochus miliaris var. millegranus Sacco : Moll. Terz. 



Piemonte, 1896, part 21, pi. 4, fig. 42, p. 44 {^= Trochus 



millegramis Reid). 



Distribution — 



Recent ... British and Mediterranean Seas, &:c. 



Astian ") ^ , 



T3, . . \ Italy 



Plaisancian ) 



Coralline Crag "1 



St. Erth Beds \ 



Lenham Beds j 



Britaii^ 



