. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. Fig. ~05 Eccijliomphalus laxuK Cafter Hall). Genus STRAPAROLLUS. Montfokt. [Ety. : St mhos, turned about.] (1810: Conch. Syst., Vol. II., p. 174.) Shell discoid, depressed conical, smooth or transversely striated. The whorls are rounded and closely joined. The umbilicus is very wide, exposing all the whorls. The thin, complete peristome is indented by the pi-ecediag whorl, Stkaparollus rudis. Hall. (Fig. 206.) (Pal. N. Y., Vol. v., Pt. II., p. 58, PL XVI.) I)istin<j;uishing Cliarncters.— About four volutions, r
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. Fig. ~05 Eccijliomphalus laxuK Cafter Hall). Genus STRAPAROLLUS. Montfokt. [Ety. : St mhos, turned about.] (1810: Conch. Syst., Vol. II., p. 174.) Shell discoid, depressed conical, smooth or transversely striated. The whorls are rounded and closely joined. The umbilicus is very wide, exposing all the whorls. The thin, complete peristome is indented by the pi-ecediag whorl, Stkaparollus rudis. Hall. (Fig. 206.) (Pal. N. Y., Vol. v., Pt. II., p. 58, PL XVI.) I)istin<j;uishing Cliarncters.— About four volutions, rounded above and slightly flattened below; inner volutions rising- above the plane of the outer one; fine surface strijp, often irregular and in fascicles. Fouud in the Encrinal lime- stone, at Section 5 (very rare).. StvaparoUns riidis (after Genus PLEUROTOMARIA. De France. [Ety. : Pleura, side; tome, cut or notch.] (1834: Tableau d. corps Organises Fossiles, p. 114, and Diet. Sci. Nat., T. XLL, p. 381.) Shell trochus shaped, more or less conical, with or without umbilicus. Volutions angular, flattened, or rounded, their. 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
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