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4-„ 



Westwood (J.O.), 1839-1840, An Introduction to the modern 

 Classification of Insects, 2 volumes (in the separately-paged 

 'Synopsis' (pp. 158) appended to Volume 2, tlie species 

 specified against the names of the genera there enumerated 

 are to be treated as having there been selected to be the type 

 species of those genera (Opinion 71)) (the dates to be 

 accepted for the various parts of this work are as set out in 

 the table below (Direction 63)) Direction 32 



'A 



%-. 



,/ 



Part No. 



'Introduction 



'Synopsis ' 

 : 1-16 



: 17-32 



: 33-48 



Date of 

 Publication 

 (from cover) 

 [May 1838] 

 [June 1838] 

 [July 1838] 

 [Aug. 1838] 

 [Sept. 1838] 

 [Oct. 1838] 

 [Nov. 1838] 

 [Dec. 1838] 

 [Jan. 1839] 

 [Feb. 1839] 

 [March 1839] 

 [April 1839] 

 [June 1839] 

 [Nov, 1839] 

 [Jan. 1840] 

 [June 1840] 



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