40 LIMN^EIDJE. 



summer. It often climbs damp walls to a height of 

 two or three feet. It varies considerably. 



Var. I. major. Larger, more tumid. 



Var. II. elegant. Larger, solid, slender. 



Var. III. minor. Smaller, thin, dark horn-colour. 



Var. IV. albida. Smaller, milk white. 



Var. V. scalariformis. Smaller, whorls somewhat 

 disjoined. 



Var. VI. microstoma. Small, whorls swollen, mouth 

 contracted. 



8. L. GLABKA (smoot^. 



Cylindrical, tapering gradually to a blunt point, thin, 

 glossy, greyish horn- colour, striated closely and regularly 

 in line of growth ; whorls seven to eight, rounded ; mouth 

 small for the size of the shell. 



This is a local species inhabiting ponds and ditches 

 in Yorkshire, Lancashire, Cheshire, and other parts of 

 the country. I have often found them crawling up 

 the stalks of reeds several inches out of the water. 

 Some that I kept in an aquarium crawled up the glass 

 side and tumbled out, thus falling victims to their 

 adventurous disposition. 



Var. elongata. Spire more produced. 



