1924 xiii, 207, 205 p., 243 figures, 60 coloured plates, 5 b/w plates, small folio (26 x 37,8 cm)dark blue publisher’s cloth with author/title in gilt on spines and embossed on front covers. Library stamps, else a good clean set. Original prospectus for this work loosely inserted.Frederick William Frohawk (1861-1946) is considered by many to be the finest British butterfly illustrator of all times. Frohawk was the first person to rear every British species of Lepidoptera from eggs to adult. A beautiful folio size book that took 25 years to compile.