266 



Doftor PuLTENEY informs us, it is rare on the coaft of 

 Dorfet ; and Mr. Pennant notes it from AngUfea. 



Mr. Bryer favoured us with it from Weymouth. 



It does not, however, appear to be plentiful any where ; 

 and is rarely procured in a recent ftate. 



12. 

 Attenuatus. M. with an elegant, flender fhell, with eight fpires, re- 

 Tab. 9. f. 6. gularly tapering to a very fine point, deftitute of firise, 

 and furnifhed with nine equidiftant, flrong ribs : volutions 

 fcarcely raifed, and feparated only by a very fine line; the 

 ribs are arched, or undulated, as they rife in the middle of 

 each volution : aperture narrow, contracting a little at the 

 canal, which is moderately long, and nearly ftrait : outer 

 lip thickened at the back with a rib ; inner lip plain. 

 Length half an inch; breadth one-eighth, or rather more. 



This (liell, which we do not find defcribed by any au- 

 thor, appears to be very rare, never having been able to 

 procure more than three or four fpecimens ; the firfi; was 

 in fand from Falmouth harbour, others from Biddeford 

 bay, of an inferior fize; all of which were of the fame 

 plain, yellowifii-white colour, without (Irise, or markings 

 of any kind ; one or two of which pofTeffed a little glofs 

 between the ribs. 



It bears fome refemblance to the M, cojlatus, but is 



much 



