PRESTWICH — BRITISH AND FOREIGN TERTIARIES. 123 



Table (^continued). 



Mollusca of the Barton Clay. 



Cyrena cycladiformis, Desk.? (Erycina 

 lajvis, Lam.) 

 obovata, Soto. 



Cytherea elegans, Lam. (Venus gallina, 



Brand.) 



pusilla, Desk. 



rotundata, Br. (V. lineolata, Sow.) 



tellinaria, Lam 



transversa, Sow. 



Range of species. 



London area. 



Gastrochaena (Fistulana, Lam.) ampul- 



laria, Lam 



contorta, Sow 



B. 



Isocardia. 



Kellia pisiformis, Charlesw 



Liraopsis scalaris, Soiv. (Pectunculus). 



Lucina albella, Lam 



ambigua, Defr 



concentrica, Lam 



divaricata, Lam 



gigantea, Desk 



Menardi, Desh 



mitis, Sovj , 



radiata, Edw , 



Saxorum, Lam , 



spinulosa, Edw , 



Modiola seminuda, Desh 



sulcata, Lam 



Neaera (Corbula, Desh.) argentea, Lam. 

 cochlearella, Desh 



Nucula bisulcata, Sow 



minima. Sow 



similis, Sow. (N.margaritacea,!)^.) 



trigona. Sow 



deltoidea, Lam. ? 



Pauopaea intermedia. Sow ' 



Pectunculus (Area) deletus. Brand. (P. 

 costatus, Sw. ; P. angusticostatus, D. .') 



Pholodaraya 



Pholas conoidea, Desh .,... 



Sanguinolaria compressa. Sow 



Solen (Cultellus) affinis, Sow 



gracilis, Sow 



vaginalis, Desh 



Solenocurtus Parisiensis, Desh. 



Paris area. 



A. 



E. 



Belgian 

 area. 



