Jena, Gustav Fischer, 1908-1916. Four parts (of six) in one. 8vo (23.3 x 15.9 cm). 586 pp.; one map, 28 plates and 207 text figures. Near contemporary black pebbled cloth. Gilt title on the spine. Original printed wrappers bound in rear.

Rare set of the results of a little-known, mainly marine biological expedition to the Caribbean (Tortugas, etc.), which took over 20 years to publish. The last two parts were not published until 1929. The present parts are far more rare, and were published as supplements to the Zoologische Jahrbücher, together forming supplement XI. The later parts comprise supplement XVI. Large sections deal with sea anemones and with Ophiura, as well as Holothuria and Blattaria. Thiele described the Mollusca, and introduced several new species. Bookplate on front pastedown; library label on spine foot; inner joints weak (the book block is heavy), otherwise a very good copy. Rare. Not in Nissen.