SECTION VII. 



^51 



Guahieri ranks the ftmous Shell the 

 Wentletrap, or Siair-cafe "'^, with Vermi- 

 cull : lie gives for reafon, that the fplres 

 of this Shell are meer loofe ones, not 

 produeed from, or any-ways connecled or 

 fupported hy, a pillar or columella, run- 

 ning through the middle of th.e Shell, its 

 length, as is the conftant and true fcriic- 

 ture of all tuibinated Shells. If fo, they 

 certainly are not Buccina, as moft authors 

 rank them, but Vermiculi. Davila alfo 

 places it among liis V^ermiculares, with- 

 out giving any reafon for fo doing. 



There are alfo Vermiculi, which have 

 concamerations, or are divided into cham- 

 bers by a few or mnny tranfverfe plates, 

 PI. II. fig. 5 t? but they are feldom regu- 

 lar, or fet at equidiftant intervals, and are 

 not pierced by a pipe or fiphunculus, that 

 communicates from chamber to chamber, 

 fo as to permit the fiih to penetrate more than 

 one chamber or inclofure at a time, in wdiich 



^ Turbo Scalaris, Linnaei Syft. Nat. p. 1237. 630. 

 f Scrpula Polythalamia, Linn. p. 1266. 802. 



Lt 4 particulars 



