07.06.2013 Views

A Review of the North American Freshwater Snail Genus Pyrgulopsis

A Review of the North American Freshwater Snail Genus Pyrgulopsis

A Review of the North American Freshwater Snail Genus Pyrgulopsis

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FIGURE 53.—Penes <strong>of</strong> eastern <strong>Pyrgulopsis</strong>: a, P. pachyta, UF 189462 (bar<br />

0.5 mm); b, P. scalariformis, UF 91726 (scale as for a).<br />

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

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