. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Shell, thin, translucent, carinate below; umbilicus very shallow; whorls 3, obsolete-striate; lip acute, margined; aperture ovate. H. 7, W. 13-IO, mill. Station, Schuylkill River, Chester County. H. bicnrinata [W. G. B.] Pig. 140, H. bicarinata, Say. Planorbis bicarinatus, Say, Nich. Encyc, Amer. Ed., 1816. Shell, pale brownish-yellow; whorls 3, carinate on both sides ; aperture large ; lip sub-revolute, arched above and below; within chestnut, with two arched lines an- swering to the carina. H. 6
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. Shell, thin, translucent, carinate below; umbilicus very shallow; whorls 3, obsolete-striate; lip acute, margined; aperture ovate. H. 7, W. 13-IO, mill. Station, Schuylkill River, Chester County. H. bicnrinata [W. G. B.] Pig. 140, H. bicarinata, Say. Planorbis bicarinatus, Say, Nich. Encyc, Amer. Ed., 1816. Shell, pale brownish-yellow; whorls 3, carinate on both sides ; aperture large ; lip sub-revolute, arched above and below; within chestnut, with two arched lines an- swering to the carina. H. 6, W. 12-9, mill. Station, ponds and streams. Chester 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
Size: 1316px × 1899px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmollusks, bookyear187
