Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Die Pteropoden der Plankton-Expedition. Mit 3 Tafeln und 2 Figuren im Text. [AND] Die Gastropoden der Plankton-Expedition. Mit 22 Tafeln und 17 Figuren im Text. [AND] Die Acephalen der Plankton-Expedition. Mit zwei Tafeln und einer Karte.

Kiel [und Leipzig], Lipsius & Tischer, 1892-1926. Four parts in one. Large 4to (32.1 x 26.1 cm). Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. 279 pp. [38; 207; 44]; 19 [2;17; 0] text figures, 28 [3; 22; 3] plates (seven in chromolithography) and tinted maps. Red buckram with gilt title on the spine. = Rare original edition of three of the five molluscan parts (Pteropoda, Gastropoda, Bivalvia) of one of the major 19th-century zoological expeditions, on board the German steamer "National", to the Atlantic Ocean (1889). The ship travelled from Kiel in Baltic Sea westwards, north of the Hebrides to the southern tip of Greenland, then south past New Foundland to the Bahamas, then crossing the tropical Atlantic to the Cape Verdes and south to Ascension, back west again to the mouth of the Amazon, and north again to the Azores, the English Channel and back to Kiel. Because this was the first expedition entirely devoted to organisms floating or swimming in the open sea, many new discoveries were made and numerous new taxa were described. In this convolute, the Pteropoda, other gastropods except Heteropoda) and Bivalvia are treated. The former by the German malacologist Paulus Schiemenz (1856-1936); the latter two by the German malacologist Heinrich Rudolf Simroth (1851-1917). The 1971 reprint by J. Cremer is much inferior, being entirely uncoloured, and in a smaller format. In this copy, however, a fourth part, titled Die Heteropoden (by Schiemenz), with 13 pages and one plate, is added in old, smaller, photocopy, and therefore not further considered. Not included is the part on Cephalopoda, by Pfeffer; however, of Pfeffer's part we do have both the original German edition, as well as the English translation. Stamp of the American malacologist Richard Irwin Johnson (1925-2020) in the top margin of the front free endpaper rectos and wrappers. A very good set of all but one of the non-cephalopodan molluscs parts of this rare series. Nissen ZBI, 4624.