908 ADDENDA TO THE AUSTRALIAN IIYDROMEDUSiE. ADDENDA TO THE AUSTRALIAN HYDROMEDUS^. By R. von Lendenfeld, Ph.D. Plates XL., XLL, XLIL, XLIII. In this paper a series of new or otherwise interesting species of Hydromeduste from different Australasiatic localities, which I obtained after my papers on the Hydromedusse were read, will he described, and a few erroneous statements corrected. They are the following : — I. SUBOKDO HYDROPOLYPIN^E. 1. FAMILY. HYDRIDE. 1. GENUS. HYDRA. Liune. 2. HYDRA FUSCA. Limie\ This species must be struck from the list of Australian H3 dro-medusse, because the specimens referred to it are identical with H. oligactis. Pallas. 5. FAMILY. BLASTOPOLYPID^. 4a (70). GENUS. MONOSKLERA. 10b (231). M. PUS1LLA. Nov. Spec. An interesting representative of a new Genus from Port Phillip. 6. GENUS. LAFGEA. 18a (232). L. CYLINDRICA. Nov. Spec. A new Species from the Bay of Islands, New Zealand, which is very similar to Lafcea pai-asitica Ciamician.
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