MILNES: LAND AND FRESHWATER SHELLS OF DERBYSHIRE. 285 



L. stagnalis var. fragilis (L.). Cromford canal (J. A. Howe). 

 L. stagnalis var, turgida Menke. One specimen in Crom- 

 ford canal. 

 L. palustris (Mlill.). Old Trent, Repton (J. Hagger) ; 



Weston (T. Hey, J. of Conch., vol. vi., p. 119). By no 



means common. 

 L. palustris var. elongata Moq, Old Trent, Repton (J, 



Hagger). 

 L. palustris var. tincta Jeff. Old Trent, Repton (J. Hagger). 

 L. palustris var. albida Jeff Old Trent, Repton (J. Hagger). 

 L. truncatula (Miill.). Moderately common in North Derby- 

 shire, sparingly in South Derbyshire (H. Milnes, J. A. 



Howe, H. E. Craven, and T. Hey). 

 L. truncatula van ventricosa Moq. Two specimens near 



Winster (H. Milnes). 

 L. truncatula var. elegans Jeff. Winster (H. Milnes). 

 L truncatula var. microstoma Drouet Winster (H. 



Milnes). 

 L. truncatula van major Moq. Winster (H. Milnes). 

 L. truncatula van minor Moq. Winster (H. Milnes). 

 L. truncatula van albida Jeff. Winster (H. Milnes). 

 L. truncatula monst. scalariforme Jeff. Winster (H. 



Milnes). 

 L. glabra (Miill.). Two specimens in a pond at Farnal Hall,, 



near Derby (T. Hey, J. of Conch., vol. vi., p, 119). 

 Ancylus fluviatilis Miill. River Derwent (H. Milnes and 



H. E. Craven) ; Darley Dale {R. Standen); Derby (T. Hey, 



J. of Conch., vol. vi., p. 119). Common. 

 A. fluviatilis van albida Jeff Pond near Whatstandwell 



(H. Milnes) ; tributary of Wye in Miller's Dale (T. Hey), 

 A. lacustris (L.). River Trent, Newton Solney (J. Hagger); 



Cromford Canal (H, Milnes and H, E. Craven) \ Weston- 



on-Trent (T, Hey, J. of Conch., vol, vi., p, 119), Local, 



but not frequent. 



