The price of “Fossil Nonmarine Ostracoda of the United States” by Frederick M. Swain, as indicated on the literature provided to PALAIOS, was without a monetary currency. Hence, the price was to be quoted in Guilders, but was published in U.S. dollars (Vol. 15, No. 2, p. 170). The correct price is US$149.50. We apologize for any inconvenience this may have caused to all parties.