93 



proceed four laraelliform varices with serrately dentate mar^ 

 gins, and on the last whorl are continued on to the canal- 

 there terminating in spiniform squamae ; alternating with the 

 varices of each whorl are four tubular spines, long and back- 

 ward directed. The surface of the shell is ornamented with 

 faint spiral ridges and transverse folds and striations. Canal 

 very long, flattened, pointed and slightly recurved at the end ;: 

 aperture circular or nearly so ; peristome continuous. 



Length, 20 ; breadth, 5 ; length of aperture and canal, 12. 



Localities. — Lower beds at Muddy Creek, Hamilton ; and 

 blue clays at Schnapper Point, Port Phillip Bay, Victoria. 



4. Typhis laciniatus, spec. nov. Plate i., fig. 10. 



Shell elongately fusiform ; whorls five and a half, the one 

 and a half embryonic whorls small and rounded ; spire- whorls 

 gradated, narrow, and flattened posteriorly, crowned at the 

 shoulder with one row of spines. Body-whorl sub-angulated 

 in front of the suture, attenuated anteriorly ; ornamented with 

 four lamelliform adpressed varices, their edges jagged but 

 developed into a spiniform scale on the shoulder of the whorl ;, 

 a long, slender tubular spine alternates with the varices. Sur- 

 face striated with growth-lines. 



Length, 11 ; breadth, 4"5 ; length of aperture and canal, 7. 



Locality. — Lower beds at Muddy Creek, near Hamilton, 

 'Victoria. 



This species differs from T. disjitnctus by its smaller size, but 

 greater proportionate breadth, and its more compact whorls. 



5. Typhis tripterus, sjyec. nov. Plate ill., fig. 14. 



Shell fusiform ; whorls six, the two and a half apical ones 

 smooth and rounded ; the rest of the spire whorls medially 

 subangulated, bearing a row of tubulations which are slightly 

 posterior to the keel and alternate with a row of short conical 

 projections situated nearer to the anterior suture. Body 

 whorl subquadrately convex posteriorly, attenuated in front ; 

 ornamented with three angular varices, which terminate at the 

 posterior angulation of the whorl in an ill-defined tubercle,, 

 and with three tubulations, each of which is closer to the varix 

 in front of it than to the one behind. 



Surface of the whorls finely striated with growth-lines, and 

 at the bases of the tubulations obliquely striated. Canal long, 

 broad, nearly straight, not closed. 



Length, 9"5 ; breadth, 45 ; length of canal and aperture,. 

 5"5. An incomplete specimen measures, length 13, breadth 6. 



Locality. — Clayey green sands, Adelaide bore (two examples).. 



