. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 4^3 which is sharply incurved over the area ; area narrow, length about half the width of the shell. Surface striated ; striae some- what tubular, prominent, fasciculate, increasing by implantation and bifurcation, extremely curved towards the margins, and presenting at somewhat regular intervals small tubular pore-like openings upon the surface; radiating striae, when not worn, cross
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 4^3 which is sharply incurved over the area ; area narrow, length about half the width of the shell. Surface striated ; striae some- what tubular, prominent, fasciculate, increasing by implantation and bifurcation, extremely curved towards the margins, and presenting at somewhat regular intervals small tubular pore-like openings upon the surface; radiating striae, when not worn, crossed by prominent concentric strise, and, rarely, by stronger lines of growth. In the usual condition of the specimens, the concentric strise are only visible in the depressions between the radiating striae, and sometimes are imperceptible. Locality. Helderberg mountains. Orthis subcaeinata (n. s.). Pal. Vol. iii, pi. 12. Shejll somewhat transversely oval, plano-convex : ventral valve very convex, strongly elevated or subcarinate along the middle; beak small, incurved : dorsal valve more or less flattened, with a distinct depression along the middle, which becomes wider towards the base, producing a sinus in the margin of the shell ^ beak scarcely rising above the hinge-line ; area narrow, linear, one-half to two-thirds the width of the shell. The depressed line along the middle of the dorsal valve, and the ridge upon the ventral valve, very frequently diverge from the central line, though the specimens do not appear to have suffered any distortion from 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 New York State Museum. Albany, Regents of the University of the State of New York
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
