BY C. HEDLEY. 17 



River. I have seen an adult shell from the Black Rocks, and a 

 young dead specimen was lately found at Balmoral Beach b}^ Mr. 

 J. J. Walker, R.N. 



Mangilia alticostata, Sowerby. 



Sowerby, Proc. Malacol. Soc. ii., 1896, p. 31, pl.iii., fig. 16. 



This species has hitherto been known only from St. Vincent's 

 Gulf, S. Australia. I have lately recognised it in a single beach 

 shell collected by Mr. J. Brazier in the dyke-trough at Hunter's 

 Beach, Middle Harbour. 



ScALA minutula, Tate & May. 



Tate & May, Trans. Roy. Soc. S. Australia, 1900, p. 95. 



This species has been found in N. S. Wales by Mr. H. L. 

 Kesteven, who has shown rae an example which he collected at 

 the North Head of Botany Bay. He has since generously 

 presented his specimen to the Australian Museum. 



Odontostomia varians, Tate & May. 



Tate & May, Trans. Roy. Soc. S. Australia, 1900, p. 97. 



An example of this species which I collected on Balmoral 

 Beach, Middle Harbour, was identified for me by Prof. Tate. 



LlOTIA VENUSTA, n.sp. 



(Plate ii., figs. 1-3.) 



Shell flattened, widely umbilicate, solid, glossy, white. Whorls 

 four and a-half. Upper ones smooth; the last two with one keel 

 at the periphery and another at a third of the distance between 

 that and the suture; on the last whorl these are beaded (32 beads 

 on the periphery), but on the penultimate they are plain. On the 

 base a keel follows the rim of the umbilicus, and at equal 

 distances three others are disposed between that and the 

 periphery. For minor sculpture there are raised spiral threads 

 between the suture and upper beaded keel. The spaces between 

 the other keels are latticed by oblique threads in the line of 



