Abstract
A BLIND ISOPOD.—For some years past, Prof. Forel, of the Academy of Lausaune, has been engaged in investigating the animal forms to be met with in the great depths of the Lake Leman. These researches have been published from time to time since 1869 in the Journal of the Vaudois Society of Natural History, and the series is apparently brought to a close in the recently published number of the journal in which he sums up the general results, and enumerates no less than seventy-six species of animals described as discovered in the Lake at depths of from 100 to 300 metres. Among these is one new blind form, closely related to our own very common fresh-water Isopod called Asellus aquaticus. When drawn up from the water it is found constantly associated with Niphargus puteanus. It is of a whitish colour, through which the brownish-coloured alimentary canal is easily perceptible. When placed in an aquarium it lives but a short time. The organs of vision are only rudimentary. The species comes near to A. cavaticus, and has been named by H. Blanc A. forellii.
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Biological Notes . Nature 21, 240–241 (1880). https://doi.org/10.1038/021240b0
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DOI: https://doi.org/10.1038/021240b0