. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA, 95 Shell, large, thick, oblique, sub-rhomboid, ventricose ; beaks prominent, undulated; epidermis dark-brown, or yellowish, without rays; surface undulated, smooth; the anterior half of the valves, near their edge, thickened internally. H. 3, W. , T. , inches. Station, Schuylkill River, Chester County. A. edentula, Say. Alasmodontaedentula, Say, New Harm. Dis., II., 1829. A. edentula. Fig. Shell, transverse-oval, compressed, olivaceous, rayed with green; beaks sma
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA, 95 Shell, large, thick, oblique, sub-rhomboid, ventricose ; beaks prominent, undulated; epidermis dark-brown, or yellowish, without rays; surface undulated, smooth; the anterior half of the valves, near their edge, thickened internally. H. 3, W. , T. , inches. Station, Schuylkill River, Chester County. A. edentula, Say. Alasmodontaedentula, Say, New Harm. Dis., II., 1829. A. edentula. Fig. Shell, transverse-oval, compressed, olivaceous, rayed with green; beaks small, undulated; within bluish- white ; teeth obsolete, but the peculiar curvature, be- neath the beaks, shows their locality. H. , W. , T. .8, inches. Station, running streams. Brandywine Creek, Ches- ter County; common. A. Tryonii, Lea, Jour. Acad. Phila. N. S., VI., 1862. A. Tryonii, Pig. 195,. 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
