96 



equidistant threads (15 on tlie penultimate wliorl), tlie mucb 

 wider intervening furrows, with subremote, curved, discon- 

 nected raised lines, as in the recent M. triformis. Aperture 

 oval ; peristome continuous, its margin thin and plain ; canal 

 unknown. 



Length, excluding canal, 32 ; breadth, li ; height of aper- 

 ture, 11. 



Locality. — Blue clays at Schnapper Point, Port Philip. 



This species is distinguished from 31. velificus by its rounded 

 whorls, equally ornamented with spiral threads, by its peculiar 

 interstitial sculpture, and by the shape of its last varix. 



3. Murex calvus, spec. nov. Plate i., fig. 11. 



Shell ovately fusiform ; whorls seven ; varices three, oblique, 

 narrowly foliaceous, margin entire ; one iutervariceal small 

 nodulation. Surface of anterior whorls with distant faint 

 spiral threads, crossed by distant faint ridges and striae ; upper 

 whorls transversely striated. Canal open, curved to the left, 

 apparently short; aperture large, ovately-oblong, inner lip 

 dentate. 



Length (incomplete), 22; breadth, 9; height of aperture, 7. 



Localities. — Clayey sands, Adelaide bore ; and Turritella- 

 clays, Blanche Point, Aldinga Bay. 



This species resembles M. ruhHclentatus, Eeeve, in shape and 

 obliquity of varices, but it has only one iutervariceal nodula- 

 tion. In all the above characters it is related to M. pinnatus , 

 "Wood, but the variceal wings are not interrupted as in that 

 species. 



4. Murex xnanubriatus, spec. nov. Plate i., fig. 9. 



Shell elongately fusiform ; whorls seven, somewhat convex,, 

 subangulated medially, faintly and distantly spirally lirate, 

 and closely striated, transversely faintly ridged ; spire rather 

 obtuse, of one and a half smooth rounded whorls. Varices 

 slightly oblique, narrowly foliated, each ending in a posterior 

 slightly recurved long spine ; margin of varix entire. 



Aperture ovate ; peristome continuous, outer lip slightly 

 thickened, edentulous. Canal closed, long, nearly straight^ 

 and slightly recurved. 



Length, 24 ; breadth, 8 ; length of apertures and canal, 16. 



Localities. — Clayey sands, Adelaide bore ; and Turritella- 

 clays at Blanche Point, Aldinga Bay. 



5. Murex trinodosus, spec. nov. Plate i., fig. 4. 



Shell trigonal elongated ; whorls six or more, somewhat 



convex, with three stout iutervariceal nodulations ; last whorl 



inconspicuously biangulated. Varices oblique, very narrowly 



winged, each ending posteriorly in a short spine. Aperture 



