New S])ecies of Victorian Mollusca. 103 



narrow band near the suture, and usually just discernible above 

 the anterior suture of the penultimate whorl ; occasionally darker 

 spots of a brownish colour are to be seen on the costse of the 

 body-whorl at or a little below the centre of the whorl. 



Dimensions. — Type specimen : Length, 9 mm.; breadth, 3-5 

 mm.; length of aperture, 4 mm.; breadth of aperture, 1'5 mm. 

 Larger examples : Length, 125 mm.; breadth, 5 mm. Immature 

 example : Length, 5-5 mm.; breadth, 2-5 m.m 



Localiiy. — San Remo, Western Port. 



Observations. — This is probably the shell that has been 

 regarded as Mangilia pura, Reeve, by some South Australian 

 and Tasmania)! conchologists, this name appearing in Mr. 

 Adcock's " Hand List of South Australian Species," p. 5, and we 

 have received it under this name from Tasmania. We have, 

 however, been unable to identify any of our shells with Reeve's 

 above species (said to be synonymous with a Mediterranean 

 shell), though the form at present under consideration might 

 possibly be regarded as the closest related. After consideration 

 of Tenison Woods' descriptions we have failed in making an 

 identification, and have therefore been constrained to regard it 

 as a new species. 



Cithara cognata, n. sp. 



Shell narrowly fusiform, somewhat st)lid, of six and a half 

 whorls, one and a half smooth nuclear whorls, the four 

 succeeding whorls being longitudinally plicate, about eleven 

 plicje on the penultimate whorl, following at somewhat irregular 

 intervals, reflected, and more developed at the suture, and 

 tending to become obsolete on the body whorl. Densely spirally 

 grooved, grooves continuing over the plica?, and crossed 

 transversely by fine striae and lines of growth, these causing an 

 irregular undulation in the groove, most noticeable on the body 

 whorl. Suture impressed. Aperture narrowly lanceolate. Sinus 

 somewhat broad, well defined. Outer lip at the edge acute, 

 thickened, almost forming a varix, interior smooth. Columella 

 smooth. 



Of a pale brown colour, sometimes there are about six white 

 spiral lines on the outer lip, which gradually disappear. 

 Distinctly, irregularly, spotted, with very dark brown, 



