LIMN^A. 37 



Var. VII. oblonga. Oblong, compressed in front. 



Var. VIII. labiosa. Smaller, outer lip expanded 

 and reflected. 



Var. IX. picta. Banded with white. 



Var. X. maritime^ Dwarfed, solid, spire produced, 

 suture deep. 



Var. XI. succineceformis. Shaped like a Succinea, 

 very thin, whorls four. 



Var. XII. decollata. Spire truncated. 



Var. XIII. sinistrorsa. Sinistral, solid, spiral 

 ridges distinct. 



Var. XIV. scalar if or mis. Oblong, whorls some- 

 what disjoined. 



4. L. AURICULARIA (ear- shaped). 



Globosely ovate, thicker and paler than L. peregra, fairly 

 glossy, semi-transparent ; whorls four to five, very tumid ; 

 spire very short ; apex sharp ; mouth very large, with outer 

 lip widely reflected. 



This interesting species, named after its resemblance 

 to the human ear, is found in rivers, lakes, ponds, and 

 canals in many parts of the country. It is common 

 and fine in the Thames, in canals in Lancashire, and 

 other places. A soft tooth-brush may be used with 

 great advantage to remove the dirt and confervoid 

 which become very firmly attached to the shell. 



