32 



[Assembly. 



Tellina solidula, 



Colchester. 



Ctrena trigonula, 



Gray's Essex. 



ASTARTE COMPRESSA, 



Clyde. 



LiTTORINA LITTORALIS, 



Colchester. 



LITTOREA, 

 Dalmuir. 



BUCCINUM UNDATUM, 



Colchester. 



BiTHINIA TENTACULATA, 



Gray's Essex. 



ZUA LUBRICA, 



Copford. 



Helix rotundata, 



Copford. 



Spongia plana, 



Yorkshire. 



— RADICIPORMIS, 



Yorkshire. 



Parasmilia centralis, 



Northfleet. 



Ananchytes ovatus, 

 Gravesend. 



Micraster coranguinum, 

 Gravesend. 



GrALERITUS ALBOGALERUS, 

 Gravesend. 



— subrotundus, 



Gravesend. 



— dixoni, 



Dover. 



Ctphosoma corollare, 



Gravesend. 



CiDARIS CLAVIGERA, 

 Gravesend. 



BOURGUETICRINUS ELLIPTICUS ) , 



( 1 root and x joi^its), ) 



Gravesend. 



Terebratula semtglobosa, do 



Gravesend and near Lewes. 



TeREBRATULINA GRACILIS, do 



Northfleet. 



Rhynchonella mantelliana, do 



Northfleet. 



Pleistocene marine. 

 Pleistocene freshwater. 

 Pleistocene marine. 

 Pleistocene marine. 

 Pleistocene marine. 

 Pleistocene marine. 

 Pleistocene freshwater. 

 Pleistocene. 

 Pleistocene. 

 Upper Chalk. 



do 



do 



do 



do 



do 



do 



do 



do 



do 



6 

 3 



4 



6 

 7 

 3 

 6 

 5 

 7 

 1 

 1 

 2 

 2 



1 



2 

 2 

 2 

 1 

 4 



X 2 



3 

 5 



2 



