92 STJioiviBUs. 



Perhaps very accurate investigation might induce 

 a corrector of the Linnaean catalogue totally to ex- 

 clude all shells in which it is not found. More 

 than one species might safely be considered Mu- 

 rices, others Buccina, and others even Helices. 

 Many of the unfinished shells of this genus resem- 

 ble Coni, and are only to be detected by the length 

 of their spire, which generally exceeds that of any 

 Conus; and sometimes by their tuberculated whorls, 

 which are extremely rare in the latter genus. 

 The animals of the Strombi are little known ; but 

 it is evident from the lateral sinus, which unques- 

 tionably has not been formed in vain, that there is 

 some specified difference which distinguishes them 

 from their nearest allies. Some peculiar construc- 

 tion requires the provision of an additional duct. 

 The term Strombus was originally used for all tur- 

 binated shells, from (Tt^oGjw, to turn round; but is 

 now exclusively conferred on those ostracodermata 

 which are distinguished by the construction above 

 explained. 



