122 



the volutions elegantly tapering, and hardly dis- 

 tinguished by the suture. 



Stagnicola elegans. Leacli, Mollusc, p. 144. 

 Buhmus fragilis. LamarcJc, vi. ii. p. 123. 

 Helix fragilis. Mo7it. p. 368. t. 16./. 7. 



Shell about half the size of the last, thin and trans- 

 parent ; from which it differs, 1 . in the regularly 

 slender form, in consequence of the idtimate volu- 

 tion not being so large in proportion to the rest : 

 2. in the smaller volutions being nearly flat, and 

 elegantly sloping to each other : 3. in the suture 

 being more oblique : and 4. in the aperture being 

 more taper and oblong, and shorter in proportion 

 to the spire. 



In stagnant waters and slow streams. 



106. LiMNEUs elongafus. Shell elongated, taper, 

 with seven or eight convex volutions, and the aper- 

 ture very short. 



Limneus elongatus. Drap. p>. 52. t. 3.f. 3, 4. 

 Limnea elongata. Sowerhy, Gen.f. 6. 

 Lymnsea Leucostoma. Lamarck, vi. ii. p. 162. 

 Stagnicola octanfracta. Leach, Mollusc, j^' 141. 

 Helix octanfracta. Mont. p.3dQ.t.l\.f.^. 



