THE ANNALS AND MAGAZINE OF NATUEAL HISTOEY. [SIXTH SERIES.] No. 82. OCTOBER 1894. XXXIII. — On the Freshwater Crustacea of the Indian Archi-pelago^ loith Observations on the Fauna of Freshwater in General. By Max Weber *. Important contributions to our knowledge of the Crustacean fauna of the fresh waters of the Indian Archipelago have been furnished in the foregoing communications printed in this second volume. Five Cladocera, two Copepods, and a Branchiopod were introduced by Herr J. Richard and six Ostracods by Herr R. Moniez, all of which were collected by myself in Sumatra and Celebes. Beyond doubt this gives us but a first glimpse of the Entomostracan fauna of the Indian islands, which is, at any rate, richer than this. It is, however, impossible sufficiently to emphasize the fact that Entomostraca are incomparably less numerous than in our European waters. It is important to observe the number of the individuals of Daphnella excisa, and especially of Moina Weheri and Diaptomus orientalis, which occurred only in the pelagic region of the great freshwater lakes of Singkarah and Manindjau, the altitude, extent, and situation of which were described at length in the introduction to this work. In these large basins I captured the species mentioned in thousands, together with a smaller number of Cyclops simplex ; in the evening they were met with on the top of the water, but * Translated from " Zoologisclie Ergebnisse einer Eeise in Nieder-landisch Ost-Indien, herausgegebea von Dr. Max Weber/' Bd. ii. Heft 2, Leiden, 1892, pp. o28-o43. Ann. & Mag. N. Hist. Ser. 6. Vol. xiv. 17
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