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The Freshwater Gastropods of North Carolina

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North Carolina Atlantic drainages

Viviparidae

Viviparus intertextus 23.7 mm	Campeloma decisum 24.5 mm	Lioplax subcarinata 14.3mm
Viviparus georgianus 25.0 mm		Bellamya japonica 55.4 mm

Pleuroceridae

Goniobasis catenaria catenaria 17.4 mm	Goniobasis catenaria dislocata 17.1 mm	Goniobasis proxima 17.7 mm
Goniobasis virginica 24.0 mm		Leptoxis carinata 13.3 mm

Hydrobiidae

Amnicola limosa 3.8 mm	Lyogyrus granum 2.6 mm	Somatogyrus virginicus 3.6 mm
Floridobia sp. 2.2 mm	Littoridinops tenuipes 3.4 mm	Gillia altilis 7.5 mm

Valvatidae

Valvata bicarinata
3.7 mm

Lymnaeidae

Lymnaea cubensis
7.4 mm

Lymnaea columella
10.4 mm

Lymnaea humilis
5.9 mm

Physidae

Physa acuta 8.3 mm	Physa pomilia 6.7 mm	Physa species A 12.0 mm
	Physa gyrina 11.5 mm

Planorbidae

Helisoma trivolvis 13.9 mm	Helisoma anceps 8.4 mm	Helisoma magnifica 27.5 mm
Gyraulus parvus 2.9 mm	Menetus dilatatus 2.4 mm	Helisoma eucosmium 4.8 mm
Planorbula armigera 7.1 mm		Promenetus exacuous 3.5 mm

Ancylidae

Ferrissia rivularis 4.6 mm	Ferrissia fragilis 2.8 mm	Laevapex fuscus 5.9 mm
	Hebetancylus excentricus 7.2 mm

Robert T. Dillon, Jr.
Department of Biology, College of Charleston
Charleston, SC 29424
P: 843.953.8087
F: 843.953.5453