30 C O N C H O L O d Y* 



and echinatiiSy in a like ignorant manner s 

 for the former term fignifies only a pearly-^ 

 coated Shell, or, as the French even now 

 anfwerably exprefs it, iine Coquille Nacree; 

 and the latter, or ecbinatus, only a Shell 

 fet with thorns or fpines, like the Echini 

 or Sea Eggs. 



Another very detrimental and pre- 

 llimptive criticifm I muft alfo take notice 

 of; a few lines further, he tells you, 

 that Lifter in his fourth book makes all 

 univalve Shells Buccina ; for example, 

 the Limpet he calls Buccinum laeve Dif- 

 fcoideum, or flat Buccinum, the Sea Ear 

 Buccinum perforatum or perforated Buc- 

 cinum. It is a falfe affertion, grounded 

 on his ignorance of language : Lifter 

 indeed intitles his fourth book de Buc- 

 cinis Marinis ; but there the term Buc- 

 cinum is ufed by metonymy or tranfpo- 

 fition of names, for Univalves in general; 

 for the term of Univalve is of modern 

 date, and was never ufed by Lifter, nor 



any 



