149 



Shell ovately fusiform, with a moderately high conic spire, 

 -ending in a blunt apex of one and a half subglobose whorls. 

 Whorls six and a half, moderately convex, with broad rib-like 

 folds (nine on the last whorl), wider than the intervening con- 

 cave interspaces, evanescent towards the posterior suture ; 

 ornamented in a spiral direction by narrow, elevated, subacute 

 threads (about 12 on penultimate whorls), sometimes with a 

 thread let in the furrow, cancellated by regular nearly straight 

 growth lines. Columella with one conspicuous plait at the top 

 of the pillar, succeeded by two small ones ; canal long, 

 straight ; outer lip thin, Urate within. 



Length, 30 ; breadth, 11 ; length of aperture, 9 ; and canal, 11. 



Locality. — Lower beds at Muddy Creek (Tenisoii-Woods and 

 X DeiiJiani .'). 



2. Fasciolaria exilis, spec. nov. Plate s., fig. 3. 



Shell lanceolate-fusiform with an elongate acuminate spire 

 ending in a small blunt apex of two subglobose whorls ; whorls 

 nine, excepting the apical ones, flatly convex, transversely 

 plicate, and widely latticed by transverse threadlets and dis- 

 tant encircling lirre. The costae are about eight to a whorl ; 

 on the posterior whorls they are thick and rounded, about 

 equalling the interspaces, becoming narrow more angular and 

 wider apart as the whorls increase ; there are six elevated 

 moderately thick lirae on the penultimate whorl, usually with 

 a threadlet in the wide intervening spaces. Last whorl of very 

 slight increase, graduall}'- tapering into the long, straight, 

 narrow beak, which is encircled with flat ridges. 



Outer lip crenulated on the margin, lirate within ; columella 

 with two or three small oblique plaits. 



Length, IS ; breadth, 4"5 ; length of aperture and canal, 9 ; 



Localities. — Grastropod bed of the River Murra}- Cliffs, near 

 Morgan ; blue clays at Schnapper Point ; lower beds at 31uddy 

 Creek. 



3. Fasciolaria concinna, sjyec. nov. PI. viii., fig. 6. 

 Shell elongate-fusiform, with a high acuminate spire, ending 

 in a small mamillate apex of one and a half smooth whorls, 

 with the tip immersed and somewhat lateral. "Whorls eight 

 and a half, the posterior spire whorls slightly gradated, plicate, 

 encircled with strong lirae, crenulated b}^ close-set transverse 

 strise ; the anterior whorls convex, a little ventricose medially, 

 but more contracted in front than behind ; ornamented with 

 narrow, regular, subacute plications, confined to the anterior 

 lialf of each whorl (15 on the penultimate whorl), and rather 

 «tout, elevated, flat spiral ridges (15 on the penultimate whorl), 

 the flat intervening spaces of double the width, provided with 



