106 



to almost subquadrate, especially so in tlie examples from iher 

 Eiver Murray cliffs ; ornameuted with about seven rounded^ 

 equidistant spiral lir?e, and transversely by much curved varices 

 and imbricating lamell?p o£ growth. Last whorl rather ventri- 

 cose, ornamented with numerous spiral lirie, eight foliar 

 varices and imbricating frilled lamella^ of growth. 



In some examples the lamellsD are so dense as to conceal the- 

 spiral ornament. 



Aperture rotund to oval ; outer lip lirate within ; canal 

 shorter than the aperture, sinistrally bent, and somewhat 

 recurved. 



Length, 16 ; breadth, 9 ; length of aperture and canal, 11. 



Localities. — Schnapper Point ; lower beds at Muddy Creek ;: 

 Eiver Murray cliffs near Morgan ; Table Cape (B. M, 

 Jolinston !) 



23. Murex asperulus, sjyec. now Plate iii., fig. 1. 



Shell elongate ovate ; spire produced, terminating in a small 

 mamillate apex of one and a half smooth whorls. AVhorls six,, 

 convex or slightly shouldered, spirally lirate, and transversely 

 varicose-plicate, and lamellose striated. There are about 

 twelve thin, similar equidistant lirae on the penultimate whorl, 

 which are raised into rather distant squamae ; varices eight tO' 

 a whorl. 



Aperture oval ; canal about as long as the aperture, twisted, 

 and recurved. 



Length, 19"5 ; breadth, 9*5 ; length of aperture and canal,. 

 10-5. 



Localities. — Schnapper Point ; lower beds at Muddy Creek ;. 

 Aldinga Cliffs. 



This species differs from M. camplytropis by its elongated 

 shape, longer canal, simpler and straighter varices, and by the- 

 squamulose threads. 



24. Murex trochispira, spec. nov. Plate iii., fig. 13. 



Shell elougately ovate, with a rather high gradated spire- 

 terminating in an acute trochiform apex consisting of four 

 smooth, flat, narrow whorls ; the next three spire whorls quad- 

 rate and anteriorly bicarinate. Last whorl with a narrow 

 sloping-upward area posterior to the angulation, anterior to 

 which are six high angulated spiral carinje, alternating with 

 slender threads in the flattish, broad furrows. 



The transverse ornament consists of rather distant lamellae, 

 raised into scales on the lirae and striae. The varices are five 

 on the last whorl, increasing in number posteriorly ; they are 

 lamellose, irregularly disposed, and produced into short, 

 vaulted scales on the carina?. Aperture oblong-oval, rather 



