1914-1916 Two parts in two (+ Nachträge). 64, [1], [4], 26, 4 p., 18 plates (4 in full colour), royal 4to, contemporary half cloth with marbled boards, title in gilt on spine. Ex library of the French Lepidopterologist Philippe Darge (1933-2023). Part two a little shorter than part 1, as issued. A few small foxing spots on the title-page of part 1, else a very good and nicely bound copy of this scarce work.This work is based on the Niepelt collection and privately published by Niepelt, but most if not all of the taxonomical work was done by Strand. Includes the 1918 Nachträge.