221 the Dates of Publication of Crustaceana Vols. 1-50
221 THE DATES OF PUBLICATION OF CRUSTACEANA VOLS. 1-50 AND SUPPL. 1-10 BY L. B. HOLTHUIS Rijksmuseum van Natuurlijke Historie, Leiden, Netherlands Now that 50 volumes of Crustaceana have been published it seems a fitting occasion to give a list of the dates of publication of the various parts and of the supplements. The actual dates in some cases are different from those printed on the covers, although in only a very few cases this discrepancy is serious. I am most indebted to Mr. P. A. Kranenburg of Messrs. E. J. Brill for providing me with these data, viz., the data that the copies were sent out. The data of supplements 1 to 3 incl. and 5 could not be found in the files of Brill's; the ones given here are those on which the copies were received by the library of the Rijksmuseum van Natuurlijke Historie, they are at the most 1 or 2 days later than the actual dates of publication. CRUSTACEANA, VOLS. 1-50 1 (1), 25 January 1960; 1 (2), 19 May 1960; 1 (3), 24 August 1960; 1 (4), 12 October 1960. 2 (1), 20 February 1961; 2 (2), 8 April 1961; 2 (3), 21 June 1961; 2 (4), 4 August 1961. 3 (1), 18 August 1961; 3 (2), 29 July 1961; 3 (3), 15 February 1962; 3 (4), 15 March 1962. 4 (1), 27June 1962; 4 (2), 4 July 1962; 4 (3), 10 September 1962; 4 (4), 6 November 1962. 5 (1), 30 January 1963; 5 (2), 28 March 1963; 5 (3), 22 May 1963; 5 (4), 15 July 1963.
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