114 



Genus Purpura. 

 1. Purpura (Trochia) abjecta, spec. nov. Plate xii., fig. 8. 



Shell stout, witli a short spire and large ventricose body 

 whorl, which is ornamented with linear encircling furrows, 

 either crowded or irregularly disposed, or with narrow flat 

 sulci as wide or wider than the flat lirae ; at the base the linear 

 furrows are increasingly distant. There are also obsolete 

 transverse plications and lamellae of growth. The aperture is 

 large and oval, with a deep short oblique groove at the front ; 

 the outer lip is simple, but stoutly lirate wdthin ; columella 

 broadly and deeply patulous. Height of body whorl, 35 ; 

 breadth, 26 ; height of aperture, 27. 



Locality. — Upper beds at Muddy Creek (J". Dennant!). 



The material available for description is not only limited, 

 but is imperfect; though, nevertheless, indicating a species 

 allied to P. fextiliosa, differing from it especially by the fine 

 revolving lirse. The species is of interest as the sole repre- 

 sentative of the genus in the older tertiary strata of Australia. 



Genus Yitularia. 

 1. Vitularia curtansata, S2}ec. nov. Plate vi., fig. 4. 



Shell rather thin, biconical, ventricose, oval. Whorls five, 

 rather convex, impressed at the suture. Last whorl ventricose, 

 gradually attenuated anteriorly into a short blunt canal. 



Spire whorls ornamented with about six stout, rounded, 

 scaly, spiral ribs, that next but one to the anterior suture a 

 little stouter than the rest, and producing a slight angulation 

 of the whorl ; the alternating furrows are deep, narrower than 

 the ribs. The transverse ornament consists of about 10 incon- 

 spicuous plications. Body whorl with about 20 unequal spiral 

 ribs. 



Aperture pyriform, straight ; peristome thinly continuous ; 

 inner lip patulous, slightly arched to the origin of the straight 

 pillar, with a thin edge parting the aperture from the umbili- 

 cal fissure ; outer lip smooth within. Canal very short, wide, 

 and truncated. 



Length, 12 ; breadth, 8 : length of aperture and canal, 7. 



Locality. — Lower beds at Muddy Creek. 



Genus Eicinula. 



1. Ricinula subreticulata, spec. nov. Plate xii., fig. 7. 



Shell small, acutely ovate, biconical, rather thick. Whorls 



:five, those of the spire nearly flat, slightly angular, and nodu- 



late over the anterior suture ; last whorl nodosely cariuated, 



and somewhat narrowly truncated in the middle. 



