. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA. 75 DIAGRAM OF THE GENERA, AND SPECIES, OF THE FAMILIES VIVI- PARIDvE, VALVATID^, AMNICOLID^, AND STREPOMATID^. Family. VIVIPARID^. VALVATIDjE. AMNICOLID.(E. STREPOMATIDiE. Genera. J Melantho. (^ Lioplax. Valvata. Amnicola. Bythinella. pomatiopsis. somatogyrus. goniobasis. Anculosa. Species. decisa. sub-carinata. tricarinata, limosa, decisa, grana. Nickliniana. lapidaria, lustrica. altilis. Virginica, var. multilineata. dissimilis. Sub-genus MELANTHO, Bowditch, 1822. Animal of
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA. 75 DIAGRAM OF THE GENERA, AND SPECIES, OF THE FAMILIES VIVI- PARIDvE, VALVATID^, AMNICOLID^, AND STREPOMATID^. Family. VIVIPARID^. VALVATIDjE. AMNICOLID.(E. STREPOMATIDiE. Genera. J Melantho. (^ Lioplax. Valvata. Amnicola. Bythinella. pomatiopsis. somatogyrus. goniobasis. Anculosa. Species. decisa. sub-carinata. tricarinata, limosa, decisa, grana. Nickliniana. lapidaria, lustrica. altilis. Virginica, var. multilineata. dissimilis. Sub-genus MELANTHO, Bowditch, 1822. Animal of Melantho. — [W. G. B.] Fig. Shell, thick, solid, ovate imperforate; whorls rounded, smooth; peristome simple, continuous. Animal, with the foot broad, and thin, produced beyond the rostrum, which is short and truncated; operculum concentric. M. decisa, Say. Paludina decisa, Say, Nich. Encyc, 1st Amer. Edit, 1817. Shell, elongate ovate; whorls 4, wrinkled across, and with minute revolving striae; aperture ovate, more than half the length of the last whorl; epidermis green ;. 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
