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Siphonaria normalis Gould, 1846
underside, fine ribs
underside, fine ribs, relaxed
Photos: CP: fine ribs: La Perouse Bay,
Maui; March. 15, 2012.
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underside, intermediate ribs
Photo: CP: intermediate ribs: Maalaea Bay,
Maui; March. 17, 2012.
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underside, course ribs
Photo: CP: 9 mm; course ribs: Napili Bay,
Maui; April 9, 2012.
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