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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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NUMBER 554<br />

FIGURE 38.—Central radular teeth <strong>of</strong> western <strong>Pyrgulopsis</strong>: a, P. minus, USNM 850354 (bar = 15.0 Jim); b, P.<br />

neomexicana, USNM 873227 (bar = 8.6 \un); c, P. nevadensis, USNM 63992 (bar = 13.6 urn); d, P. owensensis,<br />

USNM 857955 (scale as in b); e, P. pecosensis, USNM 873131 (scale as in c);/. P. perturbata, USNM 857990<br />

(scale as in c).<br />

95

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