. Bulletin - New York State Museum. Science. 268 NEW YORK STATE MUSEUM Stropheodonta hunti nov. Shell small, regularly convexo-concave. Ventral valve most con- vex along the median line, where the curvature is evenly arched and well elevated; lateral slopes depressed, at times slightly con- cave. Hinge line long, straight, often with cardinal extensions; the length of hinge is to the length of shell as three to two. The surface of the valve is uniformly smooth, usually appearing nacre- ous and without lineation but well preserved exteriors show an extremely fine radial striation hardly visible
. Bulletin - New York State Museum. Science. 268 NEW YORK STATE MUSEUM Stropheodonta hunti nov. Shell small, regularly convexo-concave. Ventral valve most con- vex along the median line, where the curvature is evenly arched and well elevated; lateral slopes depressed, at times slightly con- cave. Hinge line long, straight, often with cardinal extensions; the length of hinge is to the length of shell as three to two. The surface of the valve is uniformly smooth, usually appearing nacre- ous and without lineation but well preserved exteriors show an extremely fine radial striation hardly visible to the naked eye. About the umbo are a few low corrugations, three or four in num-. Stropheodonta hunti her and these becomx extinct over the body of the valve. The dorsal valve shows tlie same degree of corrugation as the ventral and cardinal area of conjoined valves indicates nearly complete closure of the delthyrium and a fine denticulation extending almost to the cardinal angles. The species has been observed frequently. The shell suggests both in size and in the aspect of its nacreous surface the well known S. n a c r e a from the Hamilton of New York^ for which Hall and Clarke introduced the subgeneric term Pholidostrophia.^ Other representatives of this group are known, namely an undescribed shell from the Onondaga limestone of New York and Ohio and probably the Strophomena lepis Bronn of the Eifel Middle Devonic. Lozver Devonic. Grande Greve, P. O. 1 According to Schuchert this is the same shell as that described by Owen as Chonetes? i o w e n s i s from the Middle Devonic ot Iowa and if this is the older species name it should take precedence 2 Palaeontology of New York, i8g2, v. 8, pt i, p. 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; New York State Museum. Albany :
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
