107 



abruptly contracted into a slightly curved, open canal, not sc^ 

 long as the aperture ; peristome continuous ; outer lip broadly 

 crenulated on the margin. 



Length, 10 ; breadth, 4-5 ; length of aperture and canal, 6. 



Localities. — Lower beds at Muddy Creek ; and Eiver Murray 

 Cliffs, Morgan. 



The trochiform apex imparts a very distinctive character to 

 this little Murex. 



25. Murex prionotus, spec. nov. Plate i., fig. 5. 



Shell ovate, with a moderate gradated spire, terminating in 

 a small mamillate apex. "Whorls seven, quadrate, those of the 

 spire encircled with two strong erect ribs, which are crossed 

 with fimbriated spirally finely striated lamellae. There are 

 usually two slender threads on the shoulder, one between the 

 two strong ones in the middle of the whorl, and one or two at 

 the anterior suture. Varices irregular, very foliaceous, raised 

 into spinulose squamae on the spiral ridges ; there are six on 

 the last whorl, but are about double in number on each of the 

 succeeding whorls. 



Aperture ovate, outer lip smooth within ; canal much shorter- 

 than the length of the aperture, slightly recurved. 



Length, 18 ; breadth, 9 ; length of aperture, 9*5. 



Localities. — Adelaide bore ; and Turritella clays, Aldinga 

 Bay. 



26. Murex minutus, Johnston. Plate x., fig. 14. 

 Mv^rex minutus, E. M. Johnston, Proc. Eoy. Soc, Tasmania^ 



for 1879, p. 32. 



Shell ovate-fusiform, with a moderately high gradated spire 

 terminating in a mamillate apex of one and a half smooth 

 rather high whorls. Whorls six, the anterior two and a half 

 quadrately convex, the posterior ones becoming increasingly 

 flatter. Last whorl sharply angled at the shoulder. Varices 

 seven, elevated, stout, bluntly tuberculated at the shoulder ; the 

 posterior area has no lirae, but there are six stout squarose 

 spiral lirae on the anterior portion. On the penultimate whorl 

 there are eleven stout oblique rib-like varices, crossed by three 

 thick equidistant lirae, one on the angulation and one near to 

 the anterior suture. 



Aperture quadrately-oval, abruptly contracted into a sinis- 

 trally arched, slightly recurved canal, about half the length of 

 the aperture ; outer lip thickened, obscurely dentate within. 



Length, 8'5 ; breadth, 4"d ; length of aperture and canal, 5. 



Locality. — Table Cape, Tasmania (JR,. M. Johnston !) . 



27. Murex crassiliratus, spec. nov. Plate iii., fig. 5. 

 Shell similar to M. alveolatus, but the spiral lirae are thick^. 

 of which there are ten on the last whorl ; the varices are more- 



