Bythiospeum hæussleri (Clessin, 1910) |
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| Cave rivers of Haut-Rhin, Doubs, Jura, Haute-Saône, Ain, Chartreuse massif and Vercors. Above: specimens collected in sedimentary deposits at the karst-spring of Les Hoteaux cave-river, territory of Rossillon, Ain, in the center of the Bugey massif. Altitude ≈ 380m. 2,8-2,85mm. |
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| Possible synonyms: alpinum, dorvani, francomontanum… Same spot. 2,85mm. |
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| Les Hoteaux. Sizes of the three on top: 2,85-3,6mm. |
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| A specimen from the Pissoir cave-river, Torcieu, Ain, in the SW. end of the Bugey massif. Altitude ≈ 310m. 3,05mm. |
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| Growth set from the same spot. 2,05-2,50-3,00-3,05mm. |
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| A “francomontanum” collected in sediments, karst spring of the Largue river on the territory of Oberlarg, Glaserberg massif, Sundgau area, southern Haut-Rhin. Altitude ≈ 550m. R. Bernasconi legit, 1958. 2,5mm. The aperture is narrower than in average hæussleri. |
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| Same spring. 2,85mm. On this specimen, the aperture is larger. |
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