UPPER EOCENE FORMATIONS. 
253 
as described by Mr. F. Edwards. The Bulimus ellipticus^ 
Fig. 167, and Helix occhcsa^ Fig. 168, are among its best 
known land-shells. Palicdina orbicidaris^^ig, 169, is also of 
Fig. 165. Fig. 166. 
Melania turritissima, Forbes. Fragment of Carapace of Trionyx, 
Bembridge. Bembridge Beds, Isle of Wight. 
Fig. 16T. 
Bulimiis ellipticus, Sow. 
Bembridge Limestone, 
i uat. size. 
Fig. 168. 
Helix occlusa, Edwards. 
Bembridge Limestone, 
Isle of Wight. 
Fig. 169. 
Paludina orbicularis, 
Bembridge. 
Fig. 170. 
Planorhis discus, Edwards. 
Bembridge. i diam. 
Lymnea longiscata, Brand. 
Nat. size. 
Fig. 172. 
Chara tuberculata, 
seed-vessel. Bem¬ 
bridge Limestone, 
Isle of Wight. 
frequent occurrence. One of the bands is filled with a lit¬ 
tle globular Paludina. Among the fresh-water pulmonifera, 
Lymnea longiscata (Fig. 171) and Planorhis discus (Fig. 170) 
