PLATE 3. 



Yolutospina ooniooturrita, sp. nov. 



FIG. i. Dorsal view showing the conically built spire and hook-shaped marginal spines. 

 FIG. 2. Ventral aspect of another example with a thin spreading callosity on the posterior surface of 

 the body-whorl. 



Volutospina multispinosa, sp. nov. 



FlG. 3. Ventral aspect showing elongate aperture and the spiniform-tubercle character of the sculpture. 

 FIG. 4. Dorsal view of another specimen showing the closely ridged ornamentation of the anterior half 



of the shell. 

 FIG. 5. Dorsal view of a young example. 



Cornulina minax (Solander). 



FIG 6. Ventral aspect of specimen showing the peripheral spines and the widely depressed whorls. 

 FIG. 7. Dorsal view of same showing the two distant and parallel rows of spines on the body-whorl, 

 typical of the species. 



Conispirus of. parisiensis (Deshayes). 

 FlG. 8. Dorsal view showing the excavated longitudinal striations on the periphero-sutural surface of the 



whorls. 



FIG. 9. Apertural view of another example exhibiting a minutely tubercled margin at the ba^al whorls 

 of the spire. 



Acrilla cf. affinis (Deshayes). 



FlG. 10. Fractured specimen showing the convexity and sutural depth of the whorls. 

 FlG. II. A disconnected base probably belonging to specimen represented by Fig. 10. 

 FlG. 12. Magnified view of Fig. n showing sculpture characters, x 4. 



Cypraea of. bowerbanki, J. de C. Sowerby. 



Fig- 13- Apartural view showing the ridge-like teeth of both the inner and the outer lips, the contour 

 lines being more or less approximate on account of the fractured condition of the specimen. 



Amphiperas nigeriensis, sp. nov. 

 FIG. 14. Dorsal view showing reticulate sculpture. 

 FIG. 1 5 Another example showing the curvature of the mouth and the broad terminal channel openings. 



Buccinorbis kitsoni, sp. nov. 



FIG. 16. Ventral view, exhibiting an elongate umbilical excavation and smooth columella. 

 FlG. 17. Dorsal view of another specimen showing a well elevated spire, and a furrowed and funiculate base. 

 FlG. 1 8. The upper part of specimen represented by Fig. 17, to show broad sutural platform. 

 FIG. 19. Dorsal view of a young example with a metallic lustre, being naturally stained a brownish 

 colour, covered with spiral ornamentation and longitudinal striations. 



Liomesus africanus, sp. nov. 



FlG. 20. Dorsal aspect of example showing the spiral ornamentation at the base. 

 FIG. 21. Ventral view of another form showing the uniplication near the base of the columella. 



Poirieria cf. oalcitrapa (Lamarck). 

 FIG. 22. Dorsal view showing the equidistant peripheral spines. 



FlG. 23. Apertural view of a smaller specimen with posterior canaliculated spine and denticles within 

 the inner margin of labrum. 



Strepsidura multispirata, sp. nov. 



FlG. 24. Dorsal aspect showing the closely arranged spiral sculpture. 

 FIG. 25. Ventral view of another example showing the plicated columella. 



Cancellaria multiplicis, sp. nov. 

 FlG. 26. Ventral view of specimen with the plicated columella and the interno-marginal dentated labrum. 



