Bulletins of American Paleontology. Volume 33.

1949-1951 448 p., 51 pls, paperbound. Ex libris B.M. Landau.Contains 4 papers on malacology: Pilsbry & Olsson, Review of Anticlimax, with New Tertiary Species (Vitrinellidae) (22 p., 4 pls) / Ingram, The Living Cypraeidae of the Western Hemisphere (24 p., 4 pls) / Harris, Preliminary Notes on Ocara Bivalves (54 p., 13 pls) / Marks, Miocene Stratigraphy and Paleontology of Southwestern Ecuador (62 p., 9 pls).