Vlll PREFACE. 



beginner than by examining in detail the various 

 Orders, Families, Genera and Species into which 

 different authors have sub-divided the class Insecta. 

 I commence this Manual with the Order of the 

 Coleoptera, placing in a tabular arrangement the La- 

 mellicorns described by Linneus. The first column 

 will give the Linnean species — the second the country 

 they inhabit, which in the Systema Naturae is ex- 

 ceedingly faulty, as the Geographical distribution of 

 Insects in those days was little attended to — the 

 third column will contain an arrangement of the 

 species under the several genera which modern 

 Entomologists have adopted. Next to the Linnean 

 Lamellicorns, will appear a tabular arrangement 

 of those of Fabricius, divided into four columns. 

 The first containing his genera, the second his 

 recorded species, the third the countries they in- 

 habit (often as faulty as the former), and the last 

 will present a generic arrangement of authors similar 

 to the preceding, and exhibiting as far as possible 

 the state of modern science. It may be necessary 

 here to give my reasons why I have in several cases 

 changed the generic names, such as are in common 

 use on the Continent. My friend, Mr. William 

 Sharpe MacLeay, has very properly restricted the 

 name Scarabseus to the genus of Beetles dcnomi- 



