1847.] 



PRESTWICH ON THE LONDON CLAY. 



403 



Species. 



Cyprina Morrisii, Sow 



Cyrena cycladiformis, Desk. ... 

 Cytherea elegans, Lam 



nitidula, Lam 



obliqua, Desk 



pusilla, L)es7i 



rotuudata, Brand 



suberyciiioides, Desh. ... 



? sulcataria, Desh 



tellinaria, Lam 



transversa, Sow 



trigonula, Desk 



Delphimila Warnii, Desh 



Dentalium acuminatum, Sow. 



anceps, Soiv 



eburneum, Desh 



nitens, Desh 



striatum, Sow 



Ditrupa incrassata, Sow 



plana, Soiv 



strangulata, Sow 



Fasciolaria fimiculosa, Desh. 

 Fistulana ampullaria. Lam. ... 

 Fusus acuminatus, Soio 



angusticostatus ?, Mell. . . . 



asper, Sow 



bifasciatus, Sow 



bulbiformis. Lam 



canaliculatus, Sow 



carinella, Sow 



complanatus, Soiv 



coniferus, Sow 



curtus, Sow 



desertus, Sow 



errans, Sovj 



ficulneus, Lam 



interruptus, Soiv 



intortus, Lam 



Koninckii, Ni/st 



lavatus, Sow 



lima. Sow 



longsevus, Lam 



porrectus, Brand 



regularis, Sow 



trilineatus. Sow 



tuberosus, Sow 



Noae, Za?w 



Gastrochsena contorta, Lam.... 



Harpa Trimmeri, Flem 



Hipponyx coi'nucopise, Def. ... 



squamiformis, Lam 



Infundibulum obliquum, Sow. 



trocliiforme, Sow 



Isocardia sulcata, Sow 



Synonyms. 



C. tenuistriata. Sow. 



Dentalium, Sow. 



F. aciculatus, Desh. 



Buccinum desertum 



F. unicarinatus, Desh. 



