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Show 1S71.] MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 13 pressure I saw what seemed to me something like two or three lateral barblets appearing on one side of a barbie. When the ova arrived many of them were covered by a forest of minute fungi. I submitted these to Mr. Berkeley, who informs me that " the matter on the fish-ova is a Saprolegnia ; there being only one kind of fruit, and that scarcely perfect, I cannot tell the species. The curious point is, that it is accompanied by a mucor, probably a condition of the Saprolegnia (or the reverse), with quadrate spores, which I never saw before." 2. Descriptions of thirty-four new Species of Shells from Australia. By G E O R G E F R E N C H A N G A S , Corr. M e m. Z.S.L., F.L.S., F.R.G.S., &c. [Received December 5, 1870.] *(Plate I.) 1. TRITON (CUMIA) SPECIOSA, n.sp. (Plate I. fig. 1.) Shell ovately fusiform, moderately solid, with from twenty to twenty-two conspicuous, erect, rounded varices; whitish, sometimes with a narrow zone of pale chestnut on the lower portion of the last whorl; whorls h\, encircled throughout with concentric ridges larger and smaller alternately, and decussated between the varices with sharp raised striae, forming bead-like nodules at the intersection of the ridges ; spire pointed; aperture ovate, white within; outer lip arcuate, thickened by a varix; columellar margin covered with a shining white callus ; canal short, recurved. Length 8 lines, breadth 4 lines. Hab. Green Point, Watson's Bay, Port Jackson, at very low spring-tides (Brazier). This elegantly sculptured shell appears to belong to a somewhat aberrant group of Triton, to which the subgeneric title of Cumia has been given, and of which the Triton convolutus, Brod., may be regarded as the type. 2. OLIVELLA EXQUISITA, n.sp. (Plate I. fig. 2.) Shell ovately turreted, smooth, shining, pale brownish yellow, ornamented with three rows of irregular, rather distant, dark chestnut spots, one at the suture, the others near the centre and lower portion of the last whorl, and joined by fine pale chestnut undulating lines which are carried down to the base of the shell; whorls 5; sutures channelled ; apex obtuse ; outer lip a little thickened ; columella slightly plicate anteriorly. Length 4 lines, breadth 1| line. Hab. Coodgee Bay, New S. Wales, in shell-sand (Brazier). A very handsome little shell, the waved lines on the whorls reminding one of Voluta undulata. |