1939-1941 421 p., 58 plates, new blue cloth, gilt title on the spine. The scarce volume 25 with a large paper on recent molluscs by Stillman Berry (New Mollusca from the Pleistocene of San Pedro, California I), and a larger (134 p., 12 pls) paper by Schoonover (A stratigraphic study of the mollusks of the Calvert and Choptank formations of southern Maryland). This volume includes also papers on Devonian Ostracoda, Pennsylvanian crinoids, Cretaceous echinoids, Some new crinoid species, Devonian Bryozoa Colombia. A good, clean and well bound copy, complete with the index.