Ch. XYL] fltjyio-maklne seeies in isle of wight. 209 



shales and marls, in all of which land-shells are common, especially at Sconce, 

 near Yarmouth, and have been described by Mr. Edwards. The Bulimus ellip- 

 ticus (fig. 184), and Helix occlusa (fig. 185), are among its best-known land- 



Fis. 1S4 



Fig. 1S5. 



Fig. 186. 



Bvlimus ellipticm, Sow. 

 Bembridge Limestone, 

 half natural size. 



Helix occlusa, Edwards, 

 Sconce Limestone, 

 Isle of Wight 



Paludina orbicularis, Bembridge. 



shells. Paludina orbicularis (fig. 186) is also of frequent occurrence. One of 

 the bands is filled with a little globular Paludina. Among the freshwater 



Fig. 1ST. 



Fig. 188. 



Fig. 189. 



Planorbis discus, Edwards. Bem- 

 bridge. i diam. 



Lymnea longiscata, Brard. 



Chara tuberculata. 

 Bembridge Lime- 

 stone, I. of Wight. 



pulmonifera, Lymnea longiscata (fig. 188) and Planorbis discus (fig. 187) are 

 the most generally distributed : the latter represents or takes the place of the 

 Planorbis euornphalus (see fig. 192), of the more ancient Headon series. Chara 

 tuberculata (fig. 189), is the characteristic Bembridge gyrogonite. 



From this formation on the shores of Whitecliff Bay, Dr. Mantell ob- 

 tained a fine specimen of a fan palm, Flabellaria Zamanonis, Brong., a 

 plant first obtained from beds of corresponding age in the suburbs of 

 Paris. The well-known building-stone of Binstead, near Ryde, a lime- 

 stone with numerous hollows caused by Cyrence which have disappeared 

 and left the moulds of their shells, belongs to this subdivision of 

 the Bembridge series. In the same Binstead stone Mr. Pratt and 

 the Rev. Darwin Fox first discovered the remains of mammalia char- 

 acteristic of the gypseous series of Paris, as Palceotherium magnum 



14 



