MILNES: LAND AND FRESHWATER SHELLS OF DERBYSHIRE. 287 



U. pictorum v. curvirostris Norm. Repton (P. B. Mason). 

 Anodonta cygnea (L.). Frequent in canals, etc. (/. of 



Conch., vol. vi., p. 117). 



Mr. Hagger took a specimen in Park Pond, Repton, 



Avhich he marks var. zellensis Gmel. 

 A. anatlna (L.). Very plentiful (/: of Conch., vol. vi., 



p. 117). 

 A. anatlna var. ventricosa C. Pfr. Park Pond, Repton 



(J. Hagger). 

 A; anatlna var. complanata Rossm. Park Pond, Repton 



(J. Hagger). 

 Sphaerium corneum (L.). Very frequent. (/. of Conch., 



vol. vi., p. 116). 

 S. corneum var. flavescens Macgill. Cromford Canal 



(H. Milnes); Bretby (J. Hagger). Sparingly. 

 S. rivlcola (Leach). Cromford Canal (J. A. Howe); Willington 



(T. Hagger); Cliellaston. (T. Hey, J. of Conch., vol. vi., 



p. 116). Sparingly in Matlock district, but much more 



frequent in South Derbyshire. 

 S. pallidum Gray (= S. ovale Jeff.). One specimen in 



canal at Sawley (T. Hey, /. of Conch., vol. vi., p. ii6). 



Peak Forest canal (R. 'Sitdjnden, Conchologist, vol. i., p. 56). 

 S. lacustre (Mull.). River Derwent (H. E. Craven); canal 



near Derby (Hey) ; pond at Matlock (H. E. Craven, 



/. of Conch., vol. vi., p. 116). Not common. 

 S. lacustre var. ryckholtll (Norm.). Dead specimens taken 



from mud round sides of pool near Winster (H. Milnes); 



pond at Matlock (H. E, Craven). 

 Pisldlum amnlcum (Miill.). Cromford (H. Milnes and 

 . H. E. Craven) ; Ambergate (T. Hey, /. of Conch,, 



vol. vi., p. 116). .... 



P. fontinale (Drap.). Matlock (J. A. Howe); Stanton (H. 



Milnes); MonsalL.Dale ,(T. Hey). Not plentiful (/. of 



Conch., vol. vi., p. 116). 



