34 



Banks's, the figure is larger than ours, but does not look too 

 large in comparison to it : mine is measured by the edge of 

 the shell, and is therefore accurate; but for something of a 

 deception, not readily accounted for, it looks smaller than 

 the real shell. There are in Schroeter's figure a few longi- 

 tudinal stripes, which appear by the description to be too 

 strong*. My kind friend, the Rev. Charles Sutton, A. M. 

 of Norfolk, found it by the side of the lake in Kew Gardens 

 which is now filled up. I have found smaller shells that 

 nearly resemble, but I do not know of any pair like it as 

 British. 



* These stripes are common to most species of this genus. 



