Auditory Organs of Mollusks Small 320×230 Medium 640×461 Large 1024×737 Download Tiff Original 2400×1727 | (667.7 KB) Description Auditory and equilibrative organs of mollusks. Keywords "auditory organ", mollusk Galleries Other Mollusks Source: Beach, Fredrick Converse The Encyclopedia Americana (New York, NY: The Americana Company, 1903)