. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. 62 CONCHOLOGIA CESTRICA, DIAGRAM OF THE SUB-FAMILIES, GENERA, SUB-GENERA, AND SPECIES, OF THE FAMILY LIMNAEID/E. Sub-Family. Genera. Radix. Species. columella, catascopium, elodes, refiexa, desidiosa, LIMNAEIN^. LiMNOPHYSA. humilis. caperata. ' ancillaria. PHYSINyE. Physa. hetercstropha gyrina, lata. BULINUS. hypnorum. Sub-Genus. Planorbella. campanulatus Sub-Genus. Helisoma. trivolvis, var. , bicariiiatus. Sub-Genus. • IVIenetus. e.\acutus. deflectus,
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. 62 CONCHOLOGIA CESTRICA, DIAGRAM OF THE SUB-FAMILIES, GENERA, SUB-GENERA, AND SPECIES, OF THE FAMILY LIMNAEID/E. Sub-Family. Genera. Radix. Species. columella, catascopium, elodes, refiexa, desidiosa, LIMNAEIN^. LiMNOPHYSA. humilis. caperata. ' ancillaria. PHYSINyE. Physa. hetercstropha gyrina, lata. BULINUS. hypnorum. Sub-Genus. Planorbella. campanulatus Sub-Genus. Helisoma. trivolvis, var. , bicariiiatus. Sub-Genus. • IVIenetus. e.\acutus. deflectus, Sub-Genus. Gyraulis. parvus, albus, dilatatus. Sub-Genus. Planorbula. armigera. A XT/^VT TXT 37 Genus. rivularis, AJNCY Ancylus. tardus. Genus LIMNiEA, Lamarck, 1799. Animal of LitnucBn tlesidiosa. — [W. G. B] Fig. 116. Shell, dextral, spiral, oblong, or ovate, translucent, horn color; spire acute; last whorl ventricose; aperture large, wide, rounded below; inner lip with an oblique fold ; outer lip simple. Animal, tentacles flattened, triangular; mantle thick- ened in front; foot short, rounded. Sub-genus RADIX, Montfort, 1810. Shell, sub-ovate, ventricose; aperture more than half the length of the shell, greatlv 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
