88 



Dunbar, in J^orth Britain. It is diflinguiflied from JV, hgU' 

 men by being ftraight, and ribbed at the fmaller end. 



Lacustris. Nautilus lacustris. Lin. Trans, vili. p. 114. 



p. 191. 



This fliell is the JsTantilus Tpfilon of the Portland Cabinet, 



CYPRtEA. 



EuKOP.iA, Cyprcea pediculus. Test. Bfit. p. 200. 



In tlie former part of this work we had exprefTed a doubt 

 ■whether the fhell commonly known under tlie denomination 

 of Cyprcea. pediculus, in the cabinets of the colle6lors of 

 Britijb Teftacea, was the true pediculus, fince it differs 

 fo ellentially in feveral particulars, ci'pecially in a cha- 

 radter that fliould feem to mark fo firongly a fpecific 

 diflin6lion ; that of being deflitute of the Aovhl /ulcus. If 

 indeed it had been proved that the fulcated fhell had been 

 found on our fliores, fliouid we have confidered them as the 

 fame fpecies, if Linn.'EUS had not implied they were varieties, 

 by remarking that the European flielis want the longitudinal 

 fiirrow? That Linn.'eus did not believe the fulcated fliell 

 was found even in Europe, is therefore a natural conclufion. 



In a periodical work oxir opinion has been fomewhat con- 

 tefted, under a belief that the fulcated fpecies was found on 



the 



