1893-1907 vii, 262, 50 p., 40 coloured (chromolithographs) tissue-guarded plates (plates numbered 1-21, 21bis, 22-39), roy. 4to (27 x 33,5 cm), new brown cloth (buckram). Ex library J. Krikken (with his small ex libris). French previous owner has written the distribution localities of each species on the tissue guards (for instance: Natal, Brésil, Guinée, Cameroun etc.). Although not in his original binding, a good, tightly bound copy.
1893-1907 vii, 262, 50 p., roy. 4to (27 x 33,5 cm), half cloth with original printed cover of separate installment laid on. Ex library J. Krikken (with his small ex libris). The complete text, but WITHOUT the plates.