94 



Locality and Horizon. — Miocene — Muddy Creek, Victoria. (Tate) 

 seven examples. 



11. — Mabginella ventbicosa (Hutton). 



Cat. Tertiary Moll, No. 53, p. 8. 

 Ovato-ventricose : spire very short, smooth, outer lip thickened, 

 strongly dentate ; columella plaited. Axis, "65 ; breadth, '5. 

 Eocene — Broken River (Hulton). 



(II. ) Outer lip dentate. 



2 Columella quinqueplicate. 



12. — Mabginella Wintebi (new species). 

 Shell narrowly oblong, smooth and shining ; spire exserted subacute, 

 aperture triangular, moderately wide in front; outer lip white, rather 

 flexuous, thinly but broadly thickened and somewhat inflected, with about 

 30 small obtuse denticles. Columella 5-plaited; the posterior one is 

 small and absent in young shells. Length, ^ ; breadth, "35 inch. 



The shape is much that of M. bibalteata (Rv.), and is narrower and 

 more acute than M. serrata (Reeve), both of which have quadriplicated 

 columellas. 



Locality and Horizon. — Miocene — Muddy Creek, Victoria (Tate) 

 many examples.) 



] associate with this species the name of S. P. Winter, Esq., of 

 Murndal, on the Wannon, as a slight recognition of the aid he has ren- 

 dered to myself and other investigators of the palaeontology of the 

 Muddy Creek beds. 



13. — Mabginella pbopinqua (new species). 



Shell oblong-cylindrical, solid, light horn coloured, transversely 

 streaked with white, enamelled ; aperture triangular, with a broad 

 milk-white varix strongly denticulated on the bevelled edge ; columella 

 five-plicate. Length, -45 ; breadth, -22 inch. 



It differs from the foregoing in its short spire and more tumid body 

 whorl. In form it agrees with M. Philippinarum (Redfield), which is 

 quadriplicate. 



Locality and Horizon. — Miocene — Muddy Creek, Victoria, many 

 examples ; upper beds of the River Murray Cliffs (Tate). 



14. — Mabginella Woodsi (new species). 

 Shell solid, enamelled, cream-coloured, ovately oblong ; spire 

 short, obtuse ; whorls rotundly augulate ; aperture narrowly oblong, 



