f-f with the spire as long or longer than the aper- 

 ture. 



104, LIMNEUS stagnalis. Shell oval-oblong, with 

 the lower volution much inflated, and somewhat 

 angular ; the suture deep. 



Limneus stagnalis. Drop, p. 51. t. 2. f. 38, 39. 

 Lymneus stagnalis. Brard, p. 133. t. o.f. 1. 

 Lymnus stagnalis. De Montfort, ii. p. 268. 

 Limnea stagnalis. Sowerby, Gen.f. 1. 

 Lymnsea stagnalis. Lamarck, vi. ii. p. 159. 

 Stagnicola vulgaris. Leach, Mollusc, p. 145. 

 Helix stagnalis. Mont. p. 367. t. 16. /. 8. 



Shell an inch and a half long, and nearly an inch wide, 

 thin and brittle, of a greyish-white colour, often 

 covered with an extraneous coat : spire composed 

 of six or seven volutions which are rounded and 

 tumid, tapering to a fine point ; the larger one 

 striate longitudinally and generally crossed by 

 raised transverse lines, giving it an angular ap- 

 pearance like cut glass : pillar with the fold very 

 strong, forming a slight umbilicus, the lip white 

 and spread. 



In stagnant and slow waters. 



105. LIMNEUS fragilis. Shell narrow oblong, with 



