260 MR. E. A. SMITH ON THE 



whorls. It has no augulation whatever on the body-whorl. On 

 the other hand, another example, equally large, and of the same 

 dark tint, is very strongly carinate about two millim. from the 

 suture, thus producing a conspicuous oblique tabulation. This, 

 however, only extends as far as the penultimate volution, the rest 

 of the whorls being merely slightly convex. 



A fairly constant character, judging from the series before me, 

 appears to be in the upper whorls of the spire being spirally 

 striated throughout, whilst those lower down are more or less 

 devoid of stria? at the upper part. The colour of the aperture 

 also differs, sometimes being of a dirty pale bluish, and at others 

 brownish. The basal brown band, too, is scarcely observable in 

 large specimens, whereas in younger shells it is usually quite 

 conspicuous ; but even in some of these it is absent. 



8. Melania oncoides, Tenison -Woods. 



Melania oncoides, Tenison-Woods, Proc. Linn. Soc. N. S. Wales, vol. iii. 

 1878, p. 5. 



ITah. In creeks near Bourke, Darling Eiver (Tenison -Woods). 



The author describes this species as very close in form and 

 colouring to M. onca, Angas. It is, however, smaller, conspicu- 

 ously lirate, and scarcely plicated, except upon the upper whorls. 

 The colour, too, is described as very pale yellow, marked longi- 

 tudinally with red undulating lines. On the contrary, M. onca 

 is clothed with a pale olive epidermis, and the dark-red markings 

 consist of dots formiag transverse longitudinal series. 



9. Melania v:enustula, Brof. (Plate Y. figs. 9-10.) 

 Melania venustula, Brot, Con.-Cab. ed. 2, p. 331, pi. xxxiv. figs. 5-5 a. 

 Sai. Port Denison {JBrot) ; Victoria Eiver, N. Australia 



{J. H. Elsey) ; Cape Upstart {Brazier). 



One specimen from North Australia, presented to the Museum 

 by J. E. Elsey, Esq. {vide fig. 10), is of a much more elongated form 

 than that described by Brot, or either of the two specimens received 

 from Mr. Brazier. It is acuminate, greenish yellow, without spots, 

 obliquely longitudinally closely ribbed, and transversely sulcated 

 upon the lower half of the body- whorl ; spire acute. Whorls 

 about 10, nearly flat, or scarcely convex ; body-whorl rounded at 

 the middle, at which point the costse abruptly terminate and the 

 spiral sulci commence. Aperture rather livid within, occupying 

 a little less than one third of the entire length of the specimen. 



