288 Annals of the South African Museum. 



FAMILY: HAMITID^E. 

 GEN. TOENEUTOCEEAS, Hyatt, 



12. TOKNEUTOCERAS Sp. illd. 



1861. Hamites virgulatus, Pictet& Campiche (non d'Orbigny). "Foss. 

 Ter. Cret. de Ste. Croix," Mat. Pal. Suisse, III, pt, 2, p. 85, pi. liv, 

 fis. 7 a d onl. 





A fragment (No. 4967), about 20 mm. in length, and slightly curved, 

 lias seven thick and round ribs that are very prominent 011 the ventral 

 side but disappear on the dorsum, so that the concave side of the 

 shell appears quite smooth. This agrees with the ornamentation 

 common to several species of "Hamites"; but the circular cross- 

 section and very slight obliquity of the ribs suggest comparison with 

 the above form. The example, however, is only preserved as a very 

 poor cast in a brownish, friable, sandy matrix, so that its identification 

 must remain doubtful. 



Specimens of T. viryulatitm from Angola (B.M. No. C20130-1) 

 show very similar ornament, but a more compressed section, like the 

 types of Brougniart and d'Orbigny, and Pictet & Campiche' s fig. 6. 



Some of the examples figured by Pictet & Campiche on pi. li as 

 Anisoceras alter natum (Mautell) show some resemblance to the frag- 

 ment here described (e. g. fig. 6), and it should be mentioned that there 

 is a specimen of a comparable form of Anisoceras in the British Museum 

 (No. C18300) from the South Branch of the Manuaii Creek, pre- 

 served in a similar matrix, but not referred to in Crick's paper. 

 The tuberculation of alternate ribs, however, is very distinct in this 

 fragment. 



Locality. South side of Manuan Creek Valley. Coll. W. 

 Wybergh. 



FAMILY: ANISOCERATID^E. 



GEN. ANISOCEEAS, Pictet. 



13. ANISOCERAS sp. ind. 

 (PL XXVI, fig. 7.) 



Cf. 1861. Helicoceras thitrmanni, Pictet & Campiche. " Foss. Ter. 

 Cret. Ste. Croix," Mat. Pal. Suisse, III, pt. 2, p. 118, pi. Ivi, fig. 5. 



