. The Conchologists' exchange. Mollusks. THE NAUTILUS. XXVI. PLATE I. 1. 2. POLYGYRA CLARKII BRADLEYI VAN. (VOL. XXV. p. 120). 3. 4. ALDRICH & PILSBRY : A NEW PLIOCENE NERITINA. .5, f). THYSANOPHORA COCKERELL/^: PILSBRY. 7,8. HINKLEY: ON ANCULOSA. 9. 10. AMNICOLA WINKLEYI PILSBRY. 11. 12. ASHMUNELLA FERRISSI PILS. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Averell, William D. Philadelphia, Wm. D. Averell

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188