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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SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY<br />
FIGURE 35.—Central radular teeth <strong>of</strong> western <strong>Pyrgulopsis</strong>: a, P. deserta, USNM 847202 (bar = 8.6 Jim); b, P.<br />
erythropoma, USNM 857864 (bar = 12.0 Jim); c, P.fairbanksensis, USNM 850368 (bar = 20.0 pun); d, P. gilae,<br />
USNM 873211 (bar = 13.6 \un); e, P. giulianii, USNM 857974 (scale as in d);f, P. glandulosa, USNM 847205<br />
(bar=10.0|im).