. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. PYA.—SAN.] LAMELLIBRANCHIA TA. 509. sao, Hall, 1384, Pal. N. Y., vol. d, pt. 1, p. 132, Chemung Gr. sinuosa, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 130, Up. Chemung Gr. spatulata, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 144, Up. Chemung Gr. spio. Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 137, Chemung Gr. thalia. Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 148, Up. Chemung Gr. thetis, Hall, 1884, Pal. N. Y., vol
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. PYA.—SAN.] LAMELLIBRANCHIA TA. 509. sao, Hall, 1384, Pal. N. Y., vol. d, pt. 1, p. 132, Chemung Gr. sinuosa, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 130, Up. Chemung Gr. spatulata, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 144, Up. Chemung Gr. spio. Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 137, Chemung Gr. thalia. Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 148, Up. Chemung Gr. thetis, Hall, 1884, Pal. N. Y., vol. 5,pt. 1, p. 135, Chemung Gr. trigonalls, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 140, Chemung Gr. vanuxemi, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 151, Up. Chemung Gr. Pyano>iya, S. a. Miller, 1881, Jour. Cin. Soc. Nat. Hist., vol. 4, p. 318. [Ety. pyanos, a bean; Mya, a genus.] Equi- valve, elongate, inequilateral, fragile, edentulous; ligament external. Type P. gibbosa. faberi, n. sp. Shell small, equivalve, in- equilateral ; length twice as great as height; cardinal and basal lines sub- parallel ; anterior end sharply rounded into the subelliptical base; posterior end broadly rounded ; valves ventri- cose in the middle ; beaks obtuse ; um- bonal ridge prominent, subangular, dis- tinctly defined, and directed to the postero-basal mar- gin ; ligament exter- nal ; hinge-line straight behind the beaks and inclined in front; no es- cutcheon or lunule. Surface marked very faintly by concen- tric lines of growth. Distinguished from P. glbbosa by the angular um- bo;nal ridge, less acute anterior end and straight cardinal line behind the beaks, and other particulars. Hud. Riv. Gr., Cincinnati, Ohio. Collected by Charles Faber. glbbosa, S. A. Miller, 1881, Jour. Cin. Soc. Nat. Hist., vol. 4, p. 318, Kud. Riv. Gr. Fig. 912.—Pyanomya labeil. Right valve and dorsal view. Fio. glbbosa. Left valve and dorsal view. Pyrenomceus, Hall, 1852, Pal. N. Y., vol. 2,
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