201 



1 HE author begs to preface the following Cata- 

 logue of Testaceological Writers by an acknow- 

 ledgenient of his being indebted for the substance 

 of it to a paper in vol. vii. of the Linnaean Trans- 

 actions, by Dr. Maton and the Rev. Mr. Rackett. 

 It is so perfect a compendium of the subject, that 

 he trusts he need offer no apology for wishing to 

 render it more generally useful, by putting it into 

 a form which is capable of wider dissemination 

 than the work in which it is at present extant. In 

 altering the arrangement from a chronological into 

 an alphabetical one, he by no means wishes to im- 

 ply that he considers the former method exception- 

 able, but only less adapted to an elementary treatise 

 intended rather for the horn-book of learners, than 

 for the information of the scientific. 



The numerals which are placed after the name 

 of the conchological author refer to the nature of 

 the work, the title of which is given immediately 

 afterwards in Italics. By these numerals will be 

 designated the branch of science which each writer 

 has pursued ; and by comparing them with the an- 

 nexed arrangement, it will be known at once what 



