by William Swainson

“ D, is an admirable representation of A. pallida, which, not having his work before me at the time, I could not quote; the other at C is a very good one of the present shell. The upper drawing is from one in my own cabinet; the lower is in the possession of Mr. C. Dubois, who is continually adding to his fine and valuable collection.
It is almost unnecessary to contradict the opinion of some writers who have fancied this a fresh-water shell. It is not uncommon, but seldom seen in perfection. ”