1847.] 



PRESTWICH ON THE LONDON CLAY. 



405 



Species. 



Synonyms. 



Nucula trigona, Soiv 



Bowerbanld, Sow 



Wetherellii, Sow 



compressa, Sow 



deltoidea, Lam 



ovata, Soiv 



siinilis, Soiv 



minima, Sow 



Nummulites la3vigaUis, Lam 



elegans, Sow 



variolaria, Lam 



Oliva Branderi, Sow 



aveniformis, Soto 



canalifera. Lam 



Salisburiana, Sow 



Ostrea dorsata, Sow 



elegans, Desk 



flabellula. Lam 



gigantea, Sow 



radiosa, Desk 



oblonga, Brand. 



Ovulum retusum, G. Sow 



Panopsea intermedia, Soiv 



corrugata, Sow 



Patella striata, Sow 



Pecten carinatiis, Sow 



corneus, Soiv 



opercularis, Linn 



duplicatus, Sow 



squamula. Lam 



multistriatus, Besh 



reconditus, Soiv 



Petricola coralliophaga. Desk. . . 

 Pectunculus brevirostris, Sow. . . 



decussatus. Sow 



pulvinatus, La:n 



scalaris, Sow 



deletus, Brand 



Pholadomya margaritacea, Sow. 



virgulosa, Sow, 



Dixoni, Sow 



Pinna affinis. Sow 



arcuata, Soiv 



margaritacea, Lam 



Pholas conoidea ? , Desk 



Pleurotoma acuminata, Sotv 



attennata, Besh 



brevirostra, Sow 



cataphracta, Froc 



colon, Sow 



comma, Som 



conoides, Brand 



dentata, Lam 



N. margaritacea, Besh. 

 N. striata, Lam 



N. planulatus, Lam. 



Corbula dubia, Besh. 



Recent 



P. angiisticostatus, Lam. 



