EXPLANATION OF PLATE IV. 



Figs. 1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 21, 22.— Purpura (Polyptropa) 

 Smithi, Brazier. 



Figs. 5, 6. — Helix (Patula) Unwini, Brazier, x 4. 



Figs. 13, 14, and 26.— Helix (Rhytida) Balli, Brazier, x 2. 



Figs. 15, 16. — Bythynella Ramsaii, Brazier, x 3. 



Figs. 17, 18. — Bythynella Whiteleggei, Brazier, x 4. 



Figs. 19, 20.— Helix (Rhytida) Ledgbirdi, Brazier. 



Figs. 23. 24, 25.— Helix (Rhytida) Whiteleggei, Brazier, x 2. 



Unless otherwise stated the figures are of the natural size. 



