. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. tudinal striae; cutting edge with an obtuse beak in the centre. H. 5, W. 2, mill. Station, under the bark of decayed timber, and moist decayed leaves. Chester County; frequent. —This shell was, for a long time, supposed to be identical with the English species, Zz/a lubrica, Miil- ler. To this opinion, the late Dr. Stimpson was the first to demur, on the score of its wide diffusion over this Continent; and a further examination, by Prof E. S. Morse, tends to confirm the suggestion of Dr. Stim
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. tudinal striae; cutting edge with an obtuse beak in the centre. H. 5, W. 2, mill. Station, under the bark of decayed timber, and moist decayed leaves. Chester County; frequent. —This shell was, for a long time, supposed to be identical with the English species, Zz/a lubrica, Miil- ler. To this opinion, the late Dr. Stimpson was the first to demur, on the score of its wide diffusion over this Continent; and a further examination, by Prof E. S. Morse, tends to confirm the suggestion of Dr. Stimpson, as to its specific distinction. Fig. 95, a, represents an enlarged view of the central and lateral denticle of Zua lubricoidea, Stimp.; and Fig. 95, b, the same denticles a, Dentition of Z. lubricoidea. b, Dentition of ,— [Morse.] Fig. 95. r-. cf Zua lubrica, Miill. Our shell also differs in other respects from its foreign analogue. 5*. 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
