Two volumes, complete text & plates. Pp. 616 + 80 chromolithographed plates. The standard of printing of the plates is outstanding. Bound in contemporary half black morocco leather with gilt bands by Wilkinson of Hertford, blue cloth covered boards. Contents clean and tight. Very good.[Bibliographic note: This work is renowned for its outstanding colour plates, some of which required printing from up to 14 different colour blocks (including metallic inks), resulting in a quality of colour printing so excellent that it has remained unsurpassed. But this meticulous chromolithographic printing was incredibly expensive and labour intensive. The project was hugely ambitious - to cover every known species of the World's Macrolepidoptera, but it was plagued by setbacks including two world wars and was never finished; after almost 50 years the project finally came to an end in 1954. The most important collections of butterflies and moths were consulted including those of L. W. Rothschild of Tring, the British Museum, the Paris Natural History Museum, and so on]. Folio.