137 



This species differs from F. MeriditJice by its less acuminate 

 rspire, more angular and regularly plicate whorls ; the whorls 

 are more regularly increasing than in F. simulans, and the liras 

 ^re very much stouter and fewer. 



9. Fusus simulans, spec. nov. Plate x., figs. 2a, 2&. 



Shell closely approximating to F. Meredithcs ; whorls eight, 

 till, excepting the two large apical ones, angulated or angularly 

 convex, slenderly costated, and tuberculated on the keel ; costae, 

 fseven to nine on the last whorl ; lirse not all granulated, about 

 20 on penultimate whorl alternalely large and small. 



The angular stoutly tuberculated whorls are characters too 

 pronounced to permit of specific identity with F. Meredithce ; 

 the apex though small is about twice the size of the Tasmanian 

 fossil. 



Length, 31 ; breadth, 12-5 ; length of aperture and canal, 7. 



Localities. — Gi-astropod-bed of the Eiver Murray cliffs, near 

 Morgan ; lower beds at Muddy Creek. 



10. Fusus sculptilis, spec. nov. Plate x., fig. 13. 



Shell lanceolar-fusiform, thin, of seven and a half whorls. 

 Apex blunt, of one and a half rounded smooth whorls, becom- 

 ing angulated and graduating into the next whorl, which is 

 medially angulated and transversely costated ; the rest of the 

 whorls convex, of slow increase, separated by a deep impressed 

 •suture, ornamented with costaD and curved transverse thread- 

 lets, and strong encircling threads. 



The costse are rounded, moderately elevated, and number 

 .about ten on the body whorl. The lirse are flat, thin, more or 

 less minutely crenulated, and raised into small acute nodula- 

 tions as they pass over the costse ; on the penultimate whorl 

 there are about six principal lirae, the one at the periphery 

 .stronger than the rest, with one slender thread here and there 

 in between. 



Last whorl abruptly attenuated into a long, narrow, straight 

 canal ; the costse faintly extending on to the canal, which is 

 spirally lirate. Aperture oval, peristome continuous, inner lip 

 faintly lirate within. 



Length, 14 ; breadth, 4 ; length of aperture and canal, 8. 



Locality. — Clayey green-sands, Adelaide bore. 



11. Fusus incompositus, spec. nov. Plate iii., fig. 9.! 

 Shell elongate-fusiform, with the spire suddenly contracted 

 in front of the large subcylindrical apex, which consists of two 

 smooth ventricose whorls, with the extreme tip somewhat 

 obliquely flattened down. The next whorl is very narrow, sub- 

 angulated medially, and spirally striated; the three other 



