. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 203 Mensurements.— Large specimen: width. 11 nun.; height, 8 mm. Chonetes LEPiDus. Hall. (Fig. 101).) (Pal. N. Y., Vol. IV., p. 132, PI. XXL) Distinguishing Clinvncters.— Small size; semi-ellijitical in outline; sub-hemispherical in convexity; slender, angular, x^^j^^^^^i' Fig. 109. Chonetes lepidus. Ventral and dorsal views of a specimen, natural size, and the former enlarged ; enlargement of interior of bracliial valve, with cardinal process broken away (from Hall). bifurcating surface strirV, of which there are
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 203 Mensurements.— Large specimen: width. 11 nun.; height, 8 mm. Chonetes LEPiDus. Hall. (Fig. 101).) (Pal. N. Y., Vol. IV., p. 132, PI. XXL) Distinguishing Clinvncters.— Small size; semi-ellijitical in outline; sub-hemispherical in convexity; slender, angular, x^^j^^^^^i' Fig. 109. Chonetes lepidus. Ventral and dorsal views of a specimen, natural size, and the former enlarged ; enlargement of interior of bracliial valve, with cardinal process broken away (from Hall). bifurcating surface strirV, of which there are ten or twelve near the uiiiIm), and twice as many, or more, near the front; sinus outlined by two stronger near the center, with hiier ones between them in ;i depressed area; cardinal spines, sometimes as many as ten. Found in the Goniatite bed of the Naples shales, at Sec- tions 1 and 2 (rare); Styliolina band, at Section 1 (rare); lower Moscow shales, at Sections 4 and 5 (rare); Hamilton shales, everywhere associated with the preceding, but usually more abundant; also in the Transition shales, on the Lake Shore. Chonetes coroxatus. (Conrad.) (Fig. 110.) (Pal. X. Y., Vol. IV., p. 133, PL XXL) Distinguisliing Cliaracters.— Large size; moderate convex- ity, with occasionally a shallow undefined sinus in the pedi- cle valve; numerous closely-arranged surface striffi; five or six oblique tubular s})ines on each side of the beak; interior of the pedicle vahe shows diverging dental lamellge, a narrow median ridge, and wide-si)reading adductor impressions, out- side of which the shell is strongly pustulose; in the brachial \-alve a median ridge runs foi'ward from the cardinal pro- cess ; the muscular impressions are faintly marked. Found in the Encrinal limestone, at Section 5 ; Stictopora and Demissa beds, and immediately below, at Sections 5. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - co
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