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XVI. — Remarks on the Genus Scissurella of M, 
jyOrbigny, with a description of a recent 
British Species. 
By John Fleming, D. D. F. R. S. E. &c. 
(Read I9th May 1827.; 
In the year 1809, I found, among a quantity of sand 
thrown up by the tide, on the Isle of Noss, Zetland, many 
of the rarer microscopical shells of the " Testacea Britan- 
nica." Among these, one appeared, remarkable for its 
Argonauta-hke aspect. Upon sending specimens to my 
valued correspondent, the late George Montagu, Esq., I 
was not a little surprised to find, that he regarded it as no- 
thing more than the fry of a Trochus ! The shell being 
of a small size, I entertained some suspicion that it might be 
young, and not perfectly formed, and trusted to a future 
opportunity of obtaining larger specimens. In this, how- 
ever, I was disappointed, as I never was able to detect the 
species at any subsequent period. 
Three years ago, upon communicating specimens to that 
intelligent naturalist, Mr Dillwyn, he informed me that a 
genus for the reception of analogous species had been re- 
