PLATE CLXXV. 



obvious on the firft wreath. The shell is likewise more uniformly- 

 elongated than H. stagnalis, the first wreath being less swollen, or 

 ventricose, and the remainder more so, than in that shell. — Helix 

 fragilis we have found on plants growing in rivulets about Green- 

 wich. Dr. Pultney says, it is common on plants in the river Stour. 



FIG. II. 

 HELIX FONTINALIS. 



SMOOTH FRESH WATER SNAIL. 

 SPECIFIC CHARACTER. 



Shell imperforate, ovate, and pointed, glabrous, horny ; volutions 

 five, the first and second ventricose. 



Helix fontinalis : testa imperforate ovato-acuminata glabra 

 cornea anfractibus quinque, primo secundoque 

 ventricosis. 



Common in some of the rivulets in Devonshire. Communicated 

 by J. Laskey, Esq. 



Fig. 2, are those of the common sort j a reversed variety of the 

 same species is distinguished by a star. 



