141 



Found in miiddy brooks and clear riveis, everywhere 

 abundant. I have procured it plentifully at Beeslon, 

 Attenborougb, Sawley, Thrumpton, Clifton, Wilford, 

 Lenton, Nottingham, Bramcote, Colwick, Basford, Bul- 

 well, Linby, Newstead, Oxton, Stanton, Wollaton, 

 Radclifle, &c. 



No British shell is more common than this species, or 

 more widely distributed, so that it wonld be difficult to 

 Dame a locality where it is not found. 



There are several varieties di&tinct in character, the 

 following are well known : — 



Var. ovatus. Ventricose, straw-coloured, and more 

 pellucid. 



Var. lineatus. Body whorl swollen; the shell 

 marked with linear elevations, ow ing to internal indents. 



Var. lltels. Shell stouter, mouth capacious, the 

 spire sunken, colour yellow. 



Var. lacustris. Very short eroded spire. 

 Var. marginatus. Outer lip thickened and ex- 

 panded, internal rib. 



Mr. Millett has sent specimens of var. lacastris from 

 Penzance, and Mr. Graham others from Darlington 

 The variety ovatus is found near Beestoh, in the Musco- 

 sic brook. Mr. Damon has sent var. hiteus from Wey- 

 mouth, Mr. Graham var. marginatus from Darlington, 

 near Durham, and Mr. Millett var. lineatus from 

 Penzance. 



A very lengthened form of L. pereger, small in size, 

 appears abundant; specimens have been sent from 

 Penzance by Mr. Millett, from Hartwell Park by the 

 Rev. C. Lowndes, from Stone, Bucks., by the Rev. J. B. 

 Reade, from Thornley, Lancashire, by VV. Winstanley, 

 Esq., and from Darlington by J. Graham, Esq. I have 



