124 



6. Voluta uncifera, Tate. 



Reference. — Gastropods, Part I., plate xii., fig 10. 



Two young examples only known, which exhibit the general 

 ^character of equally sized specimens of V. McDonaldi, but the 

 specific differences are — the whorls of the pullus are all convex 

 and feebly tubercular ridged ; the body whorl is more attenuated, 

 and has only about nine spinous scales on the angulation which 

 terminate less defined costse. 



Dimensions of an example of six and a half whorls, including 

 the apical ones : — Length, 34 ; width, 20 ; length of aperture, 

 .!22 ; width of pullus, 10. 



Locality.— Ci{\ciievous sandstone of the River Murray Cliffs, 

 near Morgan (R.T.). 



7. Voluta macroptera, McCoy. 



Reference, — Proc. Pal. Victoria, Decade I., tab. viii., figs. 1 — 4 

 -(1874). 



This species is fusiform, attaining to a length of about 150 

 mills. ; the spire is moderately elongate, and consists of fiatly 

 convex whorls terminated by a relatively small papillary pullus, 

 the extreme tip of which is erect ; the whorls are smooth, except 

 the two posterior ones, which are spirally striated or lined. At 

 the adult stage the outer lip becomes dilated into a very large 

 thin-edged, triangular, fiattened wing. 



Localities. — Bird rock, Geelong (McCoy ; J. B. Wilson /) ; cal- 

 ciferous sandstone of the River Murray Cliffs, near Morgan 

 {R. T.); Table Cape (Hobart Mus. !). 



8. Voluta Mortoni, spec. nov. PI. ix., figs, i and 2. 



Shell fusiform, with a short spire of subangular whorls termi- 

 nating in a relatively large, smooth, blunt pullus, the top of 

 w^hich is laterally immersed. 



Whorls three and a half, excluding the pullus, the first half 

 turn of the spire almost concealed, thence the revolutions rapidly 

 enlarge to the somewhat ventricose body-whorl. The outer lip of 

 the body-whorl is dilated into a large, thin-edged, flattened wing ; 

 its outer margin broadly convex, its posterior margin slightly 

 concave running up to the angulation of the penultimate whorl. 



The two posterior whorls are microscopically striated between 

 a few distant raised lines ; otherwise the shell is marked only 

 with fine lines of growth. 



Columella with two plaits, almost concealed from view. 



Dimensions of a nearly adult shell (fig. 1). — Total length, 65; 

 breadth, 32 ; length of aperture, 44 \ diameter of pullus, 5. 



Localities. — Lower beds at Muddy Creek {J. Dennant) ; Table 

 "Cape (Hobart Mus. !) 



