290 Annals of the South African Museum. 



suture ami the lowest (indistinct) row of tubercles with the lower 

 suture, only the two median rows are clearly visible at the middle of 

 the sides, as pointed out by Boule, Lemoine and Thcvenin. In the 

 Ste. Croix specimens, however, the three rows of lateral tubercles 

 appear to be more equal-sized, and the upper two rows are not so close 

 together.* 



Specimens of T. cenomanensis, Schliiter,f from Wiltshire and 

 Wissaut, France, of undoubted Cenomaniau age (zone of Schloenbachia 

 riiriaitf), show the closest agreement with the present fragment in the 

 arrangement of the tubercles ; but shape and coiling of the whorls are 

 slightly different in the Ceuomanian species. The Turrilites recorded 

 bv CrickJ from the Cenomanian of False Bay, Zululaud, belong to 

 different species. 



Locality. South side of Man mm Creek Valley. Coll. W. J. 

 Wybergh. 



2. NAUTILOIDEA. 



GEN. CYMATOCERAS, Hyatt, 



15. CY:MATOCERAS MANUANENSE, G. C. Crick sp. 



1907. Nautilus inanuanensis, G. C. Crick. Loc. cit. (Third Report), 

 p. 243, pi. xv, figs. 6, 60. 



This species was founded for a " less tumid, more finely ornamented 

 and more narrowly umbilicated shell than Nautilus pseudo-elegans, 

 d'Orbiguy." Crick stated that it was " numerously represented in 

 Mr. Anderson's collection from the Manuan Creek," but it is possible 

 that the specimens do not all belong to the same species, and that 

 some fragments (e. y. B.M., No. C18283) belong to such a Senoniau 

 Cymatoceras as Nautilus elegans (Sowerby) in Boule, Lemoine and 

 Thevemn; for Albiau and Seuonian forms occur together at the 

 south branch of the Manuan Creek, and there are slight differences 

 in the matrices. Taking the figured example (B.M., No. C18282) as 

 type of Crick's species, the differences from d'Orbigny's N. pseudo- 



* Pictet et Campiche, ' Ter. Cret. de Ste. Croix/ 2nd ser. (1861), p. 132, 

 pi. Ivii, fig-s. 11 13. 



t Loc. cit. (1876), p. 11 (131), pi. ii (xxxvii), figs. 6-8. (Cf. TurrHHex 

 tulerculatus (pars) Sharpe, loc. cit., Ill, 1856, pi. xxv, fig. 3 only.) (Writer's Coll.) 



J Loc. cit. (1907), pp. 173-8. 



Loc. cit. (1907), p. 66, pi. xv, fig. 4. 



