1985. 67 p., five plates with explanatory text leaves. Printed wrappers, 4to.The iconoclastic new system of the bivalves by Scarlato and Starobogatov of the zoological institute in Leningrad (St. Petersburg) in the edited translation of K.J. Boss and M.K. Jacobson. The original was published in 1979 by the Trudy Zoologicheskogo Instituta, Akademiya Nauk SSSR (volume 80). Published as Special Occasional Publication 5 by the Museum's Department of Mollusks. A very good clean copy.