Ne7v Fossils from the Bokkeveld Beds. 405 



from the typical Sc. africana, in which the hinge-plate has a slightly 

 different construction. The points of distinction do not, however, 

 possess the constancy or importance to warrant the creation of a 

 new species, particularly as the material is poor and imperfect ; 

 and we can only regard it as a variety of Sc. africana. This new 

 variety by the normal possession of a completely divided hinge-plate 

 more closely approaches typical members of the genus Bensselceria. 



ADDENDUM. 



Since the above paper was finished and the plates drawn, numerous 

 specimens of a species of Loxonema have been sent to me from the 

 locality Nooitgedacht, in the Oudtshoorn division. They are in 

 the condition of internal casts of the shell, and appear to be 

 identical with the form previously described by me as ''Loxonema 

 sp." (Ann. S. Afr. Mus., vol. iv., pt. vi., No. 11, 1904, p. 244, pi. xxx., 

 fig. 8) from Gydo Pass and Gamka Poort. If this gasteropod 

 receives a specific designation, the name capense is suggested. It 

 is doubtful if the specimens of Loxonema from Zwartberg Pass and 

 Uniondale (mentioned on p. 381 of this paper) should be referred 

 to the same species. 



EXPLANATION OF PLATES. 



Plate XL VII. 



FIG. 



1. Meto2)toiiit( cajKnse s,]). no\. x IJ. Zwartberg Pass. 



2. Ditto. Side view of another specimen, x IJ, Same locality. 



3. Bellerophon (Plectonotini) fmteiinin sp. nov. (No. 25, Geol. Surv.) Nat. size. 



Whnpperthal. 

 3a. Ditto. Side view of same specimen. Nat. size. 



4. Ditto. Dorsal view of second imperfect specimen, showing shape of notch in 



dorsal margin of mouth. (No. 25, Geol. Surv.) Nat. size. Same locality. 



5. Nuculites pacatus sp. nov. Internal cast of shell. (No. 794, S. A. M.) Nat. 



size. Zwartberg Pass. 

 5a. Ditto. Cardinal view of same specimen. Nat. size. 



6. Ditto. Internal cast of another individual. (No. 12, Vict. Coll.) Nat. size. 



Same locality. 



7. NuciiUtex sharpei sp. nov. Internal cast of left valve. (No. 18, Geol. Surv.) 



X 2. Ezelfontein. 



8. Ditto. Internal cast of right valve of another specimen. (No. 19, Geol. 



Surv.) X 2. Same locality. 



9. Nuculites Beneckei, Uhich, var. Internal cast of shell; right valve. Nat. 



size. Zwartberg Pass, 



