MolluscaBase source details
Pilsbry, H. A. (1890). Helix haemastoma var. concolor. The Nautilus. 4(5): 59-60.
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Pilsbry, H. A.
1890
<i>Helix haemastoma</i> var. <i>concolor</i>
The Nautilus
4(5): 59-60
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Helix haemastoma var. concolor Pilsbry, 1890 accepted as Acavus haemastoma (Linnaeus, 1758) (original description)