. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA, 39 Z. ligerus, Say. Helix ligera, Say, Jour. Acad. Phila., F. S., II., 1821. Shell sub-globose, obtuse, brownish-yellov/ above, paler beneath; whorls ^J, oblique-striate ; ^ unrrua. aperture lunate; lip acute, with a strong [^; ^''^^^• deposit within the margin, near its base; umbilicus very small, or none. H. 6-8, W. 11-15, mill. Station, in woods. Chester County; not common. Pig, Z. demissus, Binn. Helix demissa, Binn., Bost. Jour. Nat. Hist., IV., 1843. Shell depresse
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA, 39 Z. ligerus, Say. Helix ligera, Say, Jour. Acad. Phila., F. S., II., 1821. Shell sub-globose, obtuse, brownish-yellov/ above, paler beneath; whorls ^J, oblique-striate ; ^ unrrua. aperture lunate; lip acute, with a strong [^; ^''^^^• deposit within the margin, near its base; umbilicus very small, or none. H. 6-8, W. 11-15, mill. Station, in woods. Chester County; not common. Pig, Z. demissus, Binn. Helix demissa, Binn., Bost. Jour. Nat. Hist., IV., 1843. Shell depressed, yellowish, thickly striate ; base somewhat flattened, smooth; aperture sub-transverse, compressed-lunate; umbilicus very small; lip acute, thickened within the margin. H. 6, W. 10-12, mill. Station, in mountainous districts. Western Pennsylvania. Fig. 51. Phila. F. S., II. Z. gtilaris. [B. & B.] Fig. 52. Z. gularis, Say. Helix gularis, Say, Jour. Acad 1822. Shell depressed-conical, shining, dusky- yellow ; whorls 7-8, very minute at the apex; aperture transverse; lip thickened within, at base, with one, or more, elon- gated, lamelliform, teeth ; one at the base, the other more central; umbilicus covered, or very small. H. 5-7, W. 7-9, mill. Station, under wet logs, and decayed leaves caster County, 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
