156 ELGAR AND LAMB: MOLLUSCA OF MAIDSTONE DISTRICT. 



H. virgata DaCosta. Locally common. 



Buliminus obscurus (Mull.). Generally distributed. 



Pupa cylindracea (DaCosta). Common. 



P. muscorum (L.). Scarce. 



Vertigo pygmaea (Drap.). Common in one locality. 



V. minutissima (Hartm.). Scarce. 



Balea perversa (L.). Scarce. 



Clausula perversa (Pult). Common. 



C. rolphii Gray. Moderately plentiful in several localities. 



C. laminata (Mont.). Generally distributed. 



Azeca tridens (Pult.). Scarce. 



Cochlicopa lubrica (Miill.). Generally distributed. 



Caecilioides acicula (Miill.). Two localities. 



Succinea putris (L.). Common. 



Carychium minimum Miill. Generally distributed. 



Planorbis albus Miill. Medway, ponds and with the 



following : — 

 P. contortus Miill. 

 P, vortex (L.). 

 P. carinatus Miill. 

 P. complanatus L. 



Physa fontinalis (L). Upper Medway. 

 Limnaea peregra (Miill). Very common. 

 L. auricularia (L.). Two localities. 

 L. stagnalis (L.). One locality, a small pond by the road-side, 



plentiful. 

 L. palustris (Miill). Medway. 



L. truncatula (Mull). Medway and small streams, common. 

 Cyclostoma elegans (Miill). Very common. 

 Neritina fluviatilis (L.). Upper Medway, one locality. 

 Viviparus viviparus (L.). Upper Medway, 'common. 

 Bythinia tentaculata (L.). Medway and large ponds, 



common. 

 Valvata piscinalis (Miill). Upper Medway. 

 Unio tumid us Phil. Medway, common. 



I.e., vii., Jan. 1893. 



