A completely bound set of this rare work. The fine plates are made using the process of 10-14 colour lithography, and its excellent quality has remained unsurpassed. The editor Seitz planned to finish the whole work in 1912. This proved to be quite unrealistic as publication stopped in 1954, 17 years after the death of the author, and several volumes remained unfinished. The most important collections of butterflies were consulted including those of L. W. Rothschild of Tring, the British Museum, the Paris Natural History Museum, the Senckenberg Museum at Frankfurt, as well as collections in Tokyo, Hong-Kong, Australia, South and North America, etc. The English edition is textually shorter than German edition because the latter has the complete supplement of volume 4 (published in 1954), which remained unfinished in the English edition. The unfinished volumes 7 and 15 of the German edition also have more text. Apart from the 4th supplement-volume the same volumes remained unfinished as in the German edition and both have the same number of plates. The text published in German but not in English is here added in its original form so the set does contain all that has been published. The work was published in 16 volumes (often with the atlassas separately from the text) with 4 supplements and is composed as follows: volumes 1-4, Palaearctic Fauna with 4 supplements; volumes 5-8, American Fauna (volumes 7 and 8 remained unfinished); volumes 9-12, Indo-Australian Fauna (volumes 11 and 12 remained unfinished); volumes 13-16 African Fauna (volumes 15 and 16 remained unfinished). We have added the text (in German) which was published in the German edition, but not in the English separately in new portfolio's. Therefore this is now a more complete set than usual. Exceedingly rare in such pristine condition and completely bound with those volumes that were never bound at the time of publication is an exact matching copy of the originals. A very fine set. Cat. BM(NH), p. 1895; Nissen ZBI, 3799Na.