1959-1968 loose in (small) installments/parts as issued. This journal was issued in parts (12 for volume one and 13 for volume two). Volume one in his published title-page and index covers, such a cover was probably not issued for volume two. As far as we could ascertain publishing ceased with volume II, part 13 (dated 13-IX-1968). Library stamps, else a very good run of this rare journal that is seldom offered for sale. Includes numerous descriptions of new species.