1982-2024 In issues. After number 43 the journal has continued using volumes (starting with volume 5) instead of separately numbering each issue. Added are 5 supplements (4 of which are lists of members).
1999, 2000, 2006 & 2021 Four issues. No. 35 (1999): 70 p., figures, 4 coloured plates; No. 38 (2000): 74 p., figures, 3 coloured plates; Tome 9(1) (2006): 70 p., figures; Tome 24(2): pp. 69-136, numerous coloured figures. 4to, paperbound.