135 



contiguous to it; anterior to which is a spiral thread or two. 

 Outer lip dentate on the margin corresponding with the basal 

 lirae. 



Length, 32 ; breadth, 11 ; height of aperture, 8 ; length of 

 canal, 18, 



Locality. — " Grastropod-bed" of the Eiver Murray Cliffs near 

 Morgan. 



5. Fusus cochleatus, spec. nov. Plate viii., fig. 9. 



Shell elongately fusiform, whorls nine and a half, apex ob- 

 tuse of one and a half rounded whorls ; the rest of the whorls 

 bisected by a thin, compressed, elevated keel, extended into 

 flat, vaulted, pointed scales ; the first three spire whorls orna- 

 mented only with close sinuous growth lines, the others with 

 a strong ridge on the posterior slope contiguous to the keel, 

 and two similar, equi-distant ones in front, all provided with 

 scales like those on the keel, though smaller. Canal encircled 

 with rows of vaulted scales. 



Length, 31 ; breadth, 12 ; length of canal and aperture, 18. 



LocalUy. — Turritella clays, Blanche Point, Aldinga Bay. 



6. Fusus senticosus, spec. nov. Plate vii., fig. 3. 



Shell thin, elongately fusiform, slender ; whorls six and a 

 half, apex obtuse of one and a half more lor less elongate 

 smooth whorls ; the other whorls squarely rounded, deeply im- 

 pressed at the suture, with five encircling ribs covered with 

 tubular hollow spines, or slender vaulted pointed scales ; 

 the middle rib on the angle of the whorl stouter than the rest, 

 and furnished with long spines. Last whorl shouldered and 

 sub tabula ted, with two or three threads rarely wanting on the 

 posterior slope ; the rounded base and canal with equi-distant 

 similar spiral lirsB, one or two on the canal are stouter and 

 provided with larger spines. 



The transverse ornament is very peculiar, consisting of im- 

 bricating lamellae, more or less radially disposed around the 

 bases of the spines, and the bundles of one row somewhat 

 alternating with those of the next. 



Length, 20 ; breadth, 5'5 ; height of aperture, 4 ; length of 

 canal, 10. 



Localities. — Blue clays at Schnapper Point ; lower beds at 

 Muddy Creek ; gastropod-bed, E,iver Murray Cliffs, near 

 Morgan. 



7. Fusus dictyotis, spec. nov. Plate vii., figs. 2 and 6. 

 Shell stout, elongately fusiform with a high gradated spire, 

 angulated whorls, serrately-dentate on the keel, finely spirally 

 Urate and crossed by thin lamellae. Whorls, nine, in- 



