84 CONCHOLOGY. 



His fecond fcheme takes in the fingle 

 Shells not whirled : he conftitutes three 

 families of them, the Echini, the Patellae, 

 ^^nd the Aures Marinae^ His third fcheme 

 takes in the conic whirled Shells, as 

 Murices and Olives. The fourth the oval 

 whirled Shells. The fifth, Shells more 

 greatly whirled or produced, as the Trochi, 

 Strombi, Purpuras, &c. The Sixth, Shells 

 whofe whirles or windings are latent or 

 hid within their body, as the Cowries. 

 But, however, all thefe his fchemes are 

 fo puzzling, and without proper definitions 

 or figures, that they are rather to be reckon- 

 ed ingenious than ufeful. 



Rumphiiis has the three dlvifions of 

 fimple and turbinated Univalves, and the 

 Bivalves ; as for the dlvifion of Multi* 

 valves, he has it not, but blends them with 

 the other divilions. His families are, i. 

 The Chambered Nautilus. 2. The Paper 

 Nautilus. 17,/The Cornua Ammonia^ or 

 Helix Snails, called Poft-Horns. 4. The 

 Cochleae Lunares. 5. Trochi. 6. Cochlear 



Valvatse, 



