London, The Linnean Society of London, 1957. Large 8vo (25.4 x 17.0 cm). 16 pp.; three text figures. Original printed wrappers.

A detailed revision, based on original descriptions, type material, and further studies. Written by the Swedish entomologist Carl Hildebrand Lindroth (1905–1979). His general remarks on Linnaeus's modus operandi are quite useful in a broader context. Published in the Society's Journal, together with five other, non-related papers. A clean copy. Uncommon, if not rare, in this state.