PREFACE. 



From the unexpectedly rapid sale of the first 

 part of the Manual, I am induced to attempt a 

 second ; and should the same good fortune attend 

 the present number as the former, provided health 

 is given me, I shall be able to complete the re- 

 mainder of the work at intervals of six months ; 

 five Fasciculi forming the volume. An application 

 from my bookseller for a second edition is the cause 

 of the early appearance of the present part. I 

 have not acceded to his request, being desirous of 

 proceeding with the main work. If, however, when 

 the whole is finished there is still a demand for a 

 second edition, I shall be disposed to attend 

 to it. The delay will undoubtedly enhance its 

 value, as an extensive correspondence with the 

 leading Entomologists of Europe has already affbrded 

 me valuable information on some Fabrician species 

 which are imperfectly known ; and I have still 

 reason to expect further communications from 

 Berlin, Copenhagen, and Paris. From my friend 



