. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 297. Fig. 331. Gonuitites uniaiiguhd'is, and .suture (after Hall). is ineliuled a distinct saddle of semi-ellipticalfonn, some- times with a sub-acute apex ; ventral lobe narrow- ly triangular, penetrating' about one-third the depth of the preceding air chand)ei'. Found in the I'leurodic- tyum beds of Wanakah Cliff (rare). The Va 1'iety obes um , Clarke, characterized by "much greater thickness and tumidity of the whorls," and the variety conijnvssuin, Clarke, "laterally compressed shells, with a su
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 297. Fig. 331. Gonuitites uniaiiguhd'is, and .suture (after Hall). is ineliuled a distinct saddle of semi-ellipticalfonn, some- times with a sub-acute apex ; ventral lobe narrow- ly triangular, penetrating' about one-third the depth of the preceding air chand)ei'. Found in the I'leurodic- tyum beds of Wanakah Cliff (rare). The Va 1'iety obes um , Clarke, characterized by "much greater thickness and tumidity of the whorls," and the variety conijnvssuin, Clarke, "laterally compressed shells, with a sub-angular periphery," are cited by Clarke from Erie County. (Naples Fauna, p. 116.) The former occurs on the Lake Shore, and the latter in the Hamilton shales, at Wende Station. (See C. E. Beecher, Am. Journ. Sci., Vol. XL., pp. 71-75, PI. I., 18V)0.) GOXIATITES (TORNOCEKAS) BICOSTATUS. Hall. (Fig. 2H2.) (Pal. N. Y., Vol. v., Pt. H., p. 4:7)0, Pis. LXXH., LXXIV. Clarke: Naples Fauna, p. 118.) DmtingiiMiing Characters. — Discoidal form of adult; b r o a d 1 y c o n V e X o r fi a t venter: closed umbilicus (only in last volution): "about the ventral periph- ery runs a pair of low re- volving grooves, one on either side, without which are rather low hyponomic ridges'"; surface ornamen- tation of concentric lines, curving broadly backward over the lateral slopes, sharply forward on the hyponomic grooves, and backward, "in a deep linguiform festoon," on the venter; lateral lobe of suture more prominent and luore isolated than in preceding. 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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