151 



1 to 2'5 ; the extreme of shape is presented by the Table Cape 

 race, which has a shorter spire, more ventrieose body-whorl, with 

 large conical tubercles, the breadth to the length is as 1 to 2'2. 



5. Fasciolaria cristata, spec. nov. Plate viii., fig. 4. 



Shell fusiform, with a high scalar spire of regularly-increasing 

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

 globose whorls, the extreme tip immersed. 



"Whorls scA^en and a half, the posterior spire-whorls bluntly 

 angulated in the middle and costated ; the anterior whorls 

 angulated, bisected by a sharp, elevated, compressed keel, 

 which is cut into deep crenatures (about 10 on the body whorlj, 

 transversely plicated, coincident with the projections on the 

 keel, from which the plicae are obliquely directed, vanishing 

 towards the posterior suture, but well developed in front, 

 rounded and continued to the anterior suture. Ornamented 

 with angular unequal lir?e (about 20 on the penultimate 

 whorl), and rather closely tessellated by growth-lines. 



Body whorl with three strong lirse on the front, with a few 

 primary and secondary threads intervening, cancellated by 

 transverse striae ; base gradually attenuated into a long, some- 

 what narrow, oblique, spirally lirate beak. Aperture oval, 

 large ; columella with three oblique conspicuous plaits, the an- 

 terior one the strongest, with one to three inconspicuous pos- 

 terior plaits ; plaits sometimes bifid at their ends. 



Dimensions of a medium sized specimen : — Length, 41 ; 

 breadth, 19 ; length of aperture, 13 ; of canal, 11. 



Locality. — Lower beds at Muddy Creek. 



6. Fasciolaria cryptoploca, spec. nov. PI. viii., fig.' 2. 



Shell fusiform, moderately elongate, with a high scalar spire, 

 ending in a small mamillate apex of one and a half smooth 

 convex whorls. 



Whorls nine ; the earlier whorls flatly convex, and graduating 

 to tabulated in the two anterior ones. Anterior whorls with 

 nine plications to each whorl ; plicae narrowly rounded, 

 elevated into sharpish conical tubercles at the shoulder, 

 separated by wide, shallow and open furrows, dying out on 

 the posterior slope and on the base of the body whorl ; the 

 ornament consists of acute spiral ridges, alternately large and 

 small (about 20 on the penultimate whorl), separated by a little 

 wider angular furrows, roughened by transverse lamellae of 

 growth. 



Aperture oval-oblong; outer lip thin, strongly lirate within; 

 columella with a strong oblique fold, arising from the top of 

 the pillar, and one or two smaller above, not visible from the 

 exterior ; canal stout, rather broad, open, slightly bent to the 

 left, and a little reverted. 



