. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Shell sub-globose, finely striate, yellowish-white to pale brown; whorls 5, rounded; base convex; aperture rounded; the peristome forming nearly two-thirds of a circle, and broadly reflected, white, flesh colored behind; umbilicus partly covered; sometimes a small, white, tooth on the pillar, often edentate. H. 10, W. 15, mill. Station, under logs in moist grounds, and meadows, Chester County; common. M. bucculenta, var. Rufa, Michener, Amer. Jour. Conch., II., 1866. Helix rufa, De Kay. Nat. Hist.
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Shell sub-globose, finely striate, yellowish-white to pale brown; whorls 5, rounded; base convex; aperture rounded; the peristome forming nearly two-thirds of a circle, and broadly reflected, white, flesh colored behind; umbilicus partly covered; sometimes a small, white, tooth on the pillar, often edentate. H. 10, W. 15, mill. Station, under logs in moist grounds, and meadows, Chester County; common. M. bucculenta, var. Rufa, Michener, Amer. Jour. Conch., II., 1866. Helix rufa, De Kay. Nat. Hist. N. Y., Part I., 1843. Shell smaller and more delicate than the preceding; often strongly rufous, giving color to the reflected lip; the transverse striae are strongly marked, and often reticu- lated, by microscopic revolving lines. H. 13, W. 18, mill. Station, accompanying the last species. Chester County; common. Obs. — W. G. Binney, speaking o{ Af. albolabris, says, " Helix rufa, De Kay, appears to be the young of this ; Again, under H. thyroidcs, he says: " One [variety] from Germantown, Pa., is very small, measuring only 15 millimeters in diameter. It is globose, shining, sometimes imperforate, and generally without a parietal 3*. 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
