139 



14. Fusus aciformis, spec. nov. Plate vii, figs. 5a— 5b. 



Shell lanceolate-fusiform, with a regular decreasing spire of 

 flatly convex whorls, terminating in an obtuse summit of two- 

 and a half whorls ; the aTiterior whorl of the apex is tumid in 

 the middle, radially ridged, and is wider than the succeeding 

 spire-whorl ; the next apical whorl is much narrowed, and the- 

 small tip is depressed. Whorls 10^, excepting the apical ones, 

 almost flat ; suture linear, somewhat concealed ; the earlier- 

 whorls with five equal equidistant subacute elevated lir^e, the 

 broad concave interspaces traversed with close-set growth- 

 wrinkles ; the lirfB increase in number with the growth of the- 

 shell and are about ten on the penultimate whorl. 



Last whorl of very slight increase, gradually tapering into 

 the long straight beak, ornamented with wavy, acute, encircliuo- 

 ridges. Outer lip thin, lirate within; peristome continuous, 

 inner lip not reflected. 



Length, 41 ; breadth, 7,; length of canal and aperture, 22. 



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

 at Muddy Creek. 



In its very narrow lanceolate form this fossil most resembles 

 F. acus, Adams and Eeeve ; but the whorls are flatter, and. 

 without axial ribs. 



15. Fusus hexagonalis, spec. nov. Plate iii., figs. 15a — 156. 



Shell linear-lanceolar-fusiform, prismatic. Apex of two and 

 a half whorls, medially angulated ; the anterior one costated. 

 and projecting beyond the succeeding whorl, the next nar~ 

 rower, smooth, and ending in an upturned lateral point. The- 

 rest of the whorls six and a half, the earlier ones angulated 

 medially, gradually becoming flatly convex, separated by a deep 

 suture ; with slender axial plications or angulations, usually 

 six on a whorl in an alignment one with another from whorl to 

 whorl, thereby imparting an hexagonal outline to the spire;, 

 ornamented with flat encircling ridges and grooves, the relative 

 width of the ridges and furrows being different for different 

 individuals, and traversed by growth lines, which are raised 

 into arched scales at the suture. 



Last whorl of slight increase, convex or flatly rounded at 

 the periphery, costae reaching to the base, but not on to the 

 beak ; ornamented as the spire ; rather abruptly contracted 

 into a long, slender, straight beak. Aperture narrow, oval- 

 oblong; outer lip lirate within, its margin crenulated. 



Length, 19 ; breadth, 3 ; length of aperture and canal, 11'5. 



Locality. — Lower beds at Muddy Creek. 



16. Fusus bulbodes, spec. nov. Plate vii., fig. 8. 

 Shell long, fusiform, wdth a rapidly narrowing spire of sub- 

 imbricating whorls, terminating in a large ovoid summit.. 



