. Elements of zoölogy : a textbook. Zoology. ACEPHALA OR LAMELLIHUANCHIATA. 427 (from the Gr. monos, one, and mus, muscle), or those whose shell is closed by one muscle, as the Oyster, etc. FIG. 645. FIG. 643. FIG. 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 Tenney, Sanborn, 1827-1877. New York : Scribner

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Keywords: ., bookauthortenn, bookpublishernewyorkscribner, booksubjectzoology