120 



smooth, glossy, transparent, whitish horn-colour : 

 spire oblique, short, obtuse, consisting of three, 

 rarely four volutions, the primary one large in 

 proportion to the rest, with the sutures well de- 

 fined : aperture as long again as the spire, with a 

 small white plait on the pillar : umbilicus none. 



In the quiescent parts of rivers and in ponds, on the 

 under side of the leaves of the Water Lily. 



103. LIMNEUS glutinosus. Shell semiglobular, ex- 

 tremely thin and inflated, amber-colour : spire with 

 three scarcely produced volutions. 



Limneus glutinosus. Drap. p. 50. 

 Limnea glutinosa. fiowerby, Gen. f. 5. 

 Myxas Mulleri. Leach, Mollusc, p. 149. 

 Helix glutinosa. Mont. p. 379. t. 16./. 5. 



Shell about half an inch in diameter, extremely thin 

 and transparent, of an amber or yellowish horn- 

 colour, somewhat orbicular, with the outer lip 

 much expanded : spire consisting of three and a 

 half volutions ; the smaller one lying nearly flat 

 on the larger one, marked by a deep suture, and 

 ending obtusely ; the larger volution regularly 

 striate : pillar without umbilicus. 



In stagnant ditches about Oxford. 



