SYSTEMATIC INDEX. 



XI 



105. Pisidium ferrugineum, 



Prime. 71 



106. Pisidium ventricosum, 



Prime. 72 



107. Pisidium rotundatum, 



Prime. 72 



108. Pisidium occidentale, Nc. 



73 



109. Pisidium ultramontanum, 



Prime. 75 



110. Pisidium consanguineum, 



Priiiif. 76 



111. Pisidium contortum, Prime. 



73 



