The malacologist Shuttleworth published two papers in 1852 in which he described 41 new species of land and fresh-water molluscs from the Canary Islands. The illustrations of these new species were to be published together with a critical list of all known species of that area. The plates were finished around 1853, but strangely enough Shuttleworth, who died in 1874, never published his monograph. It took 122 years to publish the plates in a very limited edition (numbered copies). As Shuttleworth did not provide a manuscript, the text consists of an introduction (in German and English) by W. Backhuys, an obituary (in German) by von Guthnick, the original descriptions of Shuttleworth's 1852 papers and the original descriptions of other authors of which species were depicted on the plates.