11 ADVERTISEMENT. 



In my arrangement of the present work, 

 I have taken the liberty of making; a 

 distinct class of the Crustaceous Ani- 

 mals ; and separated them from Insects, 

 among which they are usually placed. 



I have paid implicit respect to the Swe- 

 dish Naturalist, in my classing of the 

 Vermes and Shells. I have, on an- 

 other occasion,* given my sentiments of 

 that wonderful man, (after Ray) the great- 

 est illuminator of the study of Nature. I 

 have borrowed from him the Latin trivial 

 names ; sometimes given translations of 

 them ; sometimes given other English 

 names, when I thought them more apt. 



Gratitude prompts me to mention a 

 most irreparable loss in my amiable friend 



logia Britannica ; Mr. Kirby a Monographia Apum An- 

 glic?; Mr. Haworth is proceeding with the Lepido- 

 ptera Britannica; and several valuable papers on this por- 

 tion of Natural History are to be found in the Transac- 

 tions of the Entomological and Linnaan Societies. Doctor 

 Solander gave to the world an account of Zoophytes, by 

 the late John Ellis, Esq., which contains most of the 

 British species. Doctor Turton has included the Zoophytes 

 and the Vermes Infusoria into his British Fauna. Ed. 

 * Synopsis of Quadrupeds, Preface vii. 



