. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 304 Gexis rEIMITIOPSIS. Jones. [Ety. : Derived from Primitia.] (1887: Notes ou some Silurian Ostracoda, from Gothland, p. 5.) Carapace bivalvecl, resembling Primitia externally. excejDt that the anterior end has a specially smooth area cor- responding- to an intei'nal portion, which is partitioned off from the rest of the cavity by a cross-wall. Primitiopsis PixcTULiFERA. (Hall.) (Fig. 243.) (Leper- ditia punctulifera. Hall: 13th Ann. Rep't N. Y. State Mns. Nat. Hist., p. 92.) Distinguishing Oia7-ar^ei>.—Snb-cy
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 304 Gexis rEIMITIOPSIS. Jones. [Ety. : Derived from Primitia.] (1887: Notes ou some Silurian Ostracoda, from Gothland, p. 5.) Carapace bivalvecl, resembling Primitia externally. excejDt that the anterior end has a specially smooth area cor- responding- to an intei'nal portion, which is partitioned off from the rest of the cavity by a cross-wall. Primitiopsis PixcTULiFERA. (Hall.) (Fig. 243.) (Leper- ditia punctulifera. Hall: 13th Ann. Rep't N. Y. State Mns. Nat. Hist., p. 92.) Distinguishing Oia7-ar^ei>.—Snb-cylindrical ontline: sub- eqnal ronnded extremi- ties ; snrface with three snmll smooth tnbercles, and a reticulated mesh- work, which gives the appearance of minute pits, and dies out at the ends; meshes more dis- tinct around central tu- era. A yoimg i ^ i left valve : lateral and edge views of a left valve, DCrCie. X 25 (after Jones). -n i i • Jb ound commonly ni the Lower shales, at Sections 5 to 8; and on the Lake Gexus EXTOMIS. Jones. [Ety. : Entoma, cut in two.] (1873: Ann. and Mag. Nat. Hist., Ser. IV., Vol. XI., p. 413.) Carapace ovato-oblong, bean shaped, rounded at both ends. Valves equal, indented by a vertical sulcus. Avhich begins at about one-third the length of the valve from the front, and extends about half way at-ross the valve. There is often a spine or tubercle in front of the furrow. Entomis rhomboidea. Jones. (Fig. 244.) (Quart. Journ. Geol. Soc, Vol. XLYL, p. 10, 1890.). 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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