On Cretaceous Cephalopoda from Zululand. 299 



GEN. KOSSMATICEEAS, de Grossouvre. 

 SUB-GEN. MADRASITES, Kilian & Reboul. 



23. KOSSMATICERAS (MADRASITES) BHAVANI, Stoliczka Sp. 



(PL XXIV, fig. 8.) 



1865. Am. bhavani, Stoliczka. " Cret. Fauna S. India" (Pal. Indica), 



I. "Cephalopoda," p. 138, pi. Ixix, figs. 4-7. 

 1897. Holcodiscus bhavani, Kossmat. "Unters. Siidind. Kreidef.," 



Beitr. Pal. und Geol. Ost.-TJug., vol. xi, p. 38 (145), pi. viii (xix), 



figs. 5 and 6. 



One example in the collection (No. 4909) agrees with the largest 

 form figured by Stoliczka (fig. 6), and has the following dimensions : 



Diameter 65 mm. 



Height of the last whorl . 40 per cent, of the diameter. 



Umbilicus ... . 29 ,, ,, 



Thickness of the last whorl . . 80 whorl-height. 



Stoliczka's example has a whorl-height of 41 per cent., an umbilicus 

 of 26 per cent, and a thickness of 77 per cent., so that it differs only 

 in having a slightly narrower umbilicus ; the umbilicus of the present 

 example, in width, agrees more with that of the smaller form figured 

 by Stoliczka. The inner whorls, shown in the umbilicus, are more 

 distinctly costate than are those of either Stoliczka's or Kossmat's 

 examples possibly a matter of preservation. 



The variety densicostata, Kilian and Reboul,* is much more finely 

 ornamented than the form here described, as are, to a lesser extent, 

 the slightly tuberculate var. seymouriana, Kilian and Reboult, K. (M. ?) 

 i-Hiiishewaense, Whiteaves, + and the variety of the latter form figured 

 as Holcodiscus cf. H. theobaldianus, Stoliczka, by Anderson. The 

 writer has lately recognised the presence, in the Upper Seuonian of 

 New Zealand, of Kossmaticeras (Madrasites) bhavani, Stoliczka sp., 

 and K. (M.) ciimshewaense (? Whiteaves) Kilian and Reboul, || as well 

 as of K. (Giuinarites) aft', bhavaniforme, Kiliau and Reboul, K. 



* Loc. cit. (1909), p. 30, pi. xviii, fig. 1, pi. xv, fig. 4. 



f Hid., p. 29, pis. xiv, xv, xix. 



Lot: fit. (' Mesoz. Foss.,' 1884), p. 208, pi. xxiv, fig. 1. 



Loc. fit. (1902), p. 101, pi. v, figs. 126-7. This form, however, is of 

 Horsetown age, and Whiteaves' species also may be earlier. 



| Possibly close to the incompletely known K. (Madrasites} mcKat/i, Hector 

 sp. (' Catal. New Zealand Court.' 1886, p. 57, text-fig. 19 a, No. 4) (misspelt 

 macCoyi in Haug, " Traite," II, ii, p. 1345), that Steinmann (loc. cit., 1895, p. 28) 

 considered to belong probably to the group of K. (J/.) aemilianum, Stoliczka sp. 



