. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Station, under stones, near water. Chester County ; not common. New Garden, P. lustrica, Say. Paludina lustrica, Say, Jour. Phila. Acad., II., 1821. Shell, conic; whorls convex; aperture oval-orbicular; upper margin of the lip not appressed to the last whorl; umbilicus rather ^ large, rounded. H. 5, W. 3/^, mill. ^ Station, shores of the Delaware River. (Tryon.) Obs. — Possibly, the young of the preceding species. J*, lustrica [W. G. B.] Pig. 175. Genus SOMATOGYRUS, Gill, 1863. Shell, short, sub-c
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Station, under stones, near water. Chester County ; not common. New Garden, P. lustrica, Say. Paludina lustrica, Say, Jour. Phila. Acad., II., 1821. Shell, conic; whorls convex; aperture oval-orbicular; upper margin of the lip not appressed to the last whorl; umbilicus rather ^ large, rounded. H. 5, W. 3/^, mill. ^ Station, shores of the Delaware River. (Tryon.) Obs. — Possibly, the young of the preceding species. J*, lustrica [W. G. B.] Pig. 175. Genus SOMATOGYRUS, Gill, 1863. Shell, short, sub-conic, striate, thin, or moderately thickened; spire small; aperture large, broad-ovate, oblique; operculum thin, sub-spiral. Animal, with the foot oblong, broadly rounded be- hind, and auricled in front; rostrum broad; tentacles long, slender, and pointed; eyes at the outer sides of. 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 Hartman, William Dell, 1817-1899; Michener, Ezra, 1794-1887. Philadelphia, Claxton, Remsen & Haffelfinger
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmollusks, bookyear187
