VOL. XVII. (2) LAND AND FRESH-WATER MOLLUSCA 193 



EXPLANATION OF PLATE XXV. 



Fig. I. Helix aspersa, var. exalbida, Menke. 

 Slad, near Stroud. 



Fig. 2. H. aspersa var. flammea, Picard. 

 Chalford, near Stroud. 



Figs. 3 and 4. Vivipara contecta, var. inflata, Villa 

 Thames and Severn Canal near Chalford. 



Fig. 5. Limneastagnalis (L.). Type form for comparison 

 with next. 

 Thames and Severn Canal, Chalford. 



Fig. 6. L. stagnalis, var. labiata, Jeffreys. 

 Thames and Severn Canal, Chalford. 



All the figures are natural size. 



