. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. Fig. 14:3. Leiorhi/nchus qnadricostutnm. Two lirachial valves and out' pe'licl'' \alve, natural size, all much distorted (fi-oni Halli. nnniber (three to five) of rounded ])lications on the fold and sinas. This species is normal in the Genesee slate, but has not been found in it in the region under discussion. S])eci- mens approaching it in character, if not identical with it, occur in the ui)per Moscow shale, at Section 1. LEioKHYXCHrs (Vanuxem.) (Fig. 144.) (Pal. N. Vol. IV.,]). 356. PI. LVl.) Dis
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. Fig. 14:3. Leiorhi/nchus qnadricostutnm. Two lirachial valves and out' pe'licl'' \alve, natural size, all much distorted (fi-oni Halli. nnniber (three to five) of rounded ])lications on the fold and sinas. This species is normal in the Genesee slate, but has not been found in it in the region under discussion. S])eci- mens approaching it in character, if not identical with it, occur in the ui)per Moscow shale, at Section 1. LEioKHYXCHrs (Vanuxem.) (Fig. 144.) (Pal. N. Vol. IV.,]). 356. PI. LVl.) DistinguLshiiig Chnrncters.— Ovate to sub-()rl)icular out- line ; gibbous char- acter of old uncom- press e d speci meiis ; mesial fold and sinus b e c o m e develojied near the front; numerous angular or sub-angular plications, those of the fold and sinus bifurcating, those of the lateral slo])es rarely dividing; fine concentric strife. Found in the lowest ten feet of the Transition shales, in the Lake Shore sections; ui)i»er ^larcellus shales, in Bay View Cliff. Leiorhynchus dibh m. Hall. I Fig. 145.) (Pal. X. Y., Vol. IV., p. 364, PI. LMI.) Difitinguishjug Characters. —OvRte outline, rapidly ex- panding towards the front: moderate and almost e([ual ccmvexity of valves; very faintly developed fold and sinus; Fig. 144. Leirirlu/nclms liinitare. , profile, and front views of a small specimen (from Hall).. 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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