Tryon, G. W. (1865). Descriptions of new species of Amnicola, Pomatiopsis, Somatogyrus, Gabbia, Hydrobia and Rissoa. American Journal of Conchology. 1: 219-222; plate 22, Figs 5-13.
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Tryon, G. W.
1865
Descriptions of new species of <i>Amnicola, Pomatiopsis, Somatogyrus, Gabbia, Hydrobia</i> and <i>Rissoa</i>