268 



M. with eight taper, coftated fpires, terminating in a 

 fharp pointed apex, flightly, but elegantly reticulated, as 

 if covered with fine gauze : the volutions are fcarceiy ele- 

 vated between the ribs, and only feparatedby a fine thread- 

 like line : aperture narrow, oblong-oval, ending in a ca- 

 nal turning a little to one fide ; outer lip fliarp ; inner lip 

 replicate, fmooth, glolTy: colour various, fometimes yel- 

 lowifii-white, others pale purplifh-brown, or rufous; but 

 the mofl; beautiful variety is of a bluni-colour, with the 

 decudaled firiee white. 



Worn fliells, that hav^ lofl; the fine firise, might be con- 

 founded for the M. cojiatus, without proper attention : it 

 is, however, in that ftate afcertained by the turn of the 

 canal, by the aperture being much fliorterand notfo con- 

 trafted, and by the fuperior number of ribs, which is 

 ten or eleven, and thofe not fo much elevated. 



We have found this pretty fliell at Falmouth; and on 

 the north and fouth coafts o^ Devovjhire, particularly 5zV/- 

 deford bay : and have received it from the fouth coafl; of 

 Wales, where it is not uncommon about Tenby and 

 Laugharne. Alfo from Weymouth. It is, however, by no 

 means plentiful, and good fpecimens rare: the largefl: ra- 

 ther exceed half an inch in length; and two-tenths of an 

 inch in breadth. 



15. 

 Septangularis M. with feven or eight, ftrong, fmooth, taper volutions. 



Tab. 9. f. 5. terminating in a fine point, of a light purplifli-brown co- 

 lour 



