1942-1943 376 p., 36 plates, new blue cloth, gilt title on the spine. The scarce volume 27 with papers on molluscs by Stillman Berry (New Mollusca from the Pleistocene of San Pedro, California II), three papers by R.H. Flower (Cephalopoda Seward Peninsula of Alaska / Arctic Cephalopod Faunule from the Cynthiana of Kentucky / Cephalopods Clinton Group of New York), W.M. Ingram (Type fossil Cypraeidae of North America), G.D. Harris (Rio Cachiri Section in the Sierra Perija, Venezuela. Brachiopoda and Mollusca), and a larger one by A. Olsson (Tertiary and Quaternary Fossils from the Burica Peninsula of Panama and Costa Rica). A good, clean copy, complete with the index.