* THE RESULTS of DEEP-SEA INVESTIGATIONS in the TASMAN SEA. I.— THE EXPEDITION of H.M.C.S. " MINER." 1 5. — The Polyzoa. By C. M. Maplestone, Eltham, Vict. (Plates lxxv.-lxxviii.) I. — Introduction. Some time ago I received for examination from Professor W. A. Has well a very interesting collection of Polyzoa which had been dredged in about eighty fathoms at about twenty-two miles east of Port Jackson, by H.M.C.S. " Miner." Most of the speci-mens were " dead " and somewhat worn, showing, I consider, that the place from which they were obtained was a resting-place for an accumulation of material carried from a considerable distance by ocean currents. Very few, if any, seem to have been living on the spot. The collection consisted of some roughly-sorted specimens and a small portion of unsorted material. I was doubtful when I received them whether I could undertake the examination. I am sorry to say that I cannot at present complete the task, but I have been able to deal with the most striking forms. The Biporce are by far the most interesting of them, of which there are six new species. A detailed description is given of these, and some other new species and one new genus, below. The known species which I have been able to identify are as follow : — Caberea grandis, Hincks. Membranipora gemmata, Waters. ,, profunda, McGil. ,, bellula, Hincks. Cellaria australis; McGil. Lunutites canaliculata, McGil. 1 Continued from Vol. VI., p. 311.