. The Conchologists' exchange. Mollusks. The Nautilus Vol. VIII. MARCH, 1895. No. 11 UNIO OCHRACEUS AND CARIOSUS. BY CHARLES TURKEY MIMPSON. The senior editor of the Nautilus has asked me to point out in a clear concise way the specific differences between Unio ochraceus Say, and| Unio cariosus Say. They were both described in Nichol- son's Encyclopedia, in an article on conchology, by Say ; and the work, which is now long out of print, is exceedingly rare, and out of the reach of the ordinary Union ochraee«8 Say. Both belong to a great assembly of North American forms fairly typifie
. The Conchologists' exchange. Mollusks. The Nautilus Vol. VIII. MARCH, 1895. No. 11 UNIO OCHRACEUS AND CARIOSUS. BY CHARLES TURKEY MIMPSON. The senior editor of the Nautilus has asked me to point out in a clear concise way the specific differences between Unio ochraceus Say, and| Unio cariosus Say. They were both described in Nichol- son's Encyclopedia, in an article on conchology, by Say ; and the work, which is now long out of print, is exceedingly rare, and out of the reach of the ordinary Union ochraee«8 Say. Both belong to a great assembly of North American forms fairly typified by the well known Unio occidens, it being one of the few groups that are well represented both in the Mississippi Valley and. 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
