Dates after M. J. Faber (2011-2012), Miscellanea Malacologica, 5(3): 61-70 and 5(4): 80; C. D. Sherborn & B. B. Woodward (1901) gave slightly different dates [1-64 (1846); 65-176 (1847); 177-224 (1848), 225-272 (1849), 273-379 (1849 or 1850), all plates (1846)] . Some copies are bound with a title page printed later, mentioning "Continué par le docteur P. Fischer" and bearing J.B. Baillière alone as publisher, but the text starting p. 1 is the original