9® C O N e H O L O G Y, 



duced or lengthened, as the Snails of all 

 .kinds, Nerits, fimilunar, round moutlicd. 

 Helices, &c. and with thefe he ranks the 

 ^a £ars* 



Part IV. Bivalves : and Part V. Multi- 

 valves, among which he places the Echini, 



I ihall comment very little on his fyf« 

 tern, and only obferve, that, in all his 

 claffes, there occurs an inextricable con- 

 fufion; and that he feems to borrow his 

 arrangement chiefly from Langius, 



Gualtieri has likewife favoured the 

 learned with a publication of a manufcript 

 fyflem or arrangement of Shells by the 

 celebrated Mr. Tournefort. This method 

 has the three ufual and general divifions of 

 Univalves, Bivalves, and Multivalves, The 

 firft is fimple Univalves, as the Limpets^ 

 The fecond, the turbinated of all kinds ; 



as Buccina, Cochleae, Cowries, &c. and 



the 



