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| Kingdom Animalia |
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Hyalopyrgus F. G. Thompson, 1968 -- invalid |
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Hyalopyrgus aequicostatus (Pilsbry, 1890) -- invalid -- Smooth-rib Hydrobe |
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Hyalopyrgus brevissimus (Pilsbry, 1890) -- invalid -- Regal Hydrobe |
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Ipnobius Hershler, 2001 -- valid |
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Ipnobius robustus (Hershler, 1989) -- valid -- Robust Tryonia |
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Paludestrina brevissimus (Pilsbry, 1890) -- invalid |
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Pseudotryonia Hershler, 2001 -- valid |
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Pseudotryonia adamantina (Taylor, 1987) -- valid -- Diamond Tryonia |
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Pseudotryonia alamosae (Taylor, 1987) -- valid -- Caliente Tryonia |
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Pseudotryonia brevissima (Pilsbry, 1890) -- valid -- Regal Hydrobe |
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Pseudotryonia grahamae F. G. Thompson, 2001 -- valid -- Salt Spring Hydrobe |
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Tryonia Stimpson, 1865 -- valid |
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Tryonia aequicostata (Pilsbry, 1890) -- valid -- Smooth-rib Hydrobe, Smooth-ribbed Hydrobe |
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Tryonia porrecta (Mighels, 1845) -- valid -- Desert Tryonia |
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