On Cretaceous Cephalopoda from Znhilanil. 267 



formation* ; but in India it occurs in the Lower Aryalur and Upper 

 Trichinopoly groups, and Haugf has it, both in the Santonian and in 

 the Maestrichtian, on the same page. 



The difficulties of exact correlation were probably felt by Kilian and 

 Reboul,}; who put the beds of Snow Hill and Seymour Islands, that 

 both contain Kossmaticeras (Madras it eg) bhavani, into the Senouian 

 s.l. ( = : Santonian to Maestrichtian), placing the lower horizon as 

 equivalent to the Indian Upper Trichinopoly group, whereas the 

 upper beds show close affinity, not only with the Aryalur and 

 Valudayur groups, but also with the Campanian or Maestrichtian 

 deposits of Southern Patagonia. The fact that Placenticeras, similar to 

 the Zululand forms, occur in the Maestrichtian Fort Pierre Shale of 

 America, perhaps, is in favour cf the attribution of the fauna here 

 discussed, and of Pondoland, to this upper horizon of Antarctica ; 

 and it may be added that the two forms here described from the 

 north-west shore of False Bay (Mortoniceras vanuxemi, Morton sp., 

 and Bostrychoceras ? sp ) also are of Campanian age ; further, that 

 the isolated specimen of Peroniceras cf. drar iil/cimi, representing a cast 

 in limonite, after pyrites(?), differs in mode of preservation from the 

 Ammonites of the Umkwelaue Hill fauna as from the two forms of 

 Peroniceras described by Crick. If not all, at least the great majority 

 of the forms of the Umkwelane Hill and Pondoland Ammonite 

 faunas probably are of Campanian (and Maestrichtian ?) age, and in 

 his phylogenetic interpretation of the genera Psendoschloenbachia and 

 Diazicera*, the writer assumed their Upper Senonian age. But the 

 occurrence, at about the limit between the Coniaciau and Santonian 

 at which level the Pondolaud fauna had been placed by Grossouvre 

 and associated with Mortoniceras texanitm, of forms like Lenticeras, 

 Barroisiceras and what the writer considers to be Gauthiericeras 

 developments (bertrancli-fournieri group), affords the most striking 



^ Kilian and Eeboul (loc. cit., p. 60) quote it as Upper Chico, but Anderson 

 (pp. 27 and 98) distinctly characterises it as a Lower Chico species. 



t Loc. cit., II, ii, p. 1342. 



J Table on p. 58, loc. cit., also p. 59. In this Antarctic fauna, also, the great 

 majority of forms are Upper Senonian. The little-known genera Graharnites 

 and Seymourites show a very striking resemblance to certain Canadian Fort 

 Pierre forms in the British Museum, including A. larnstoni, Meek ('Sas- 

 katchewan Exploring Expedition : Geolog. Keport,' H. Y. Hind, Toronto, 

 1859, Chapter XIX (by F. B. Meek), p. 197, pi. ii, figs. 1-3). 



E.g. B. dentato-carinatum, Koemer (Hill), a form very near to " Schloen- 

 bachia" siskiyouensis, Anderson (Lasswitz, p. 29, thought them identical), which 

 perhaps resembles the Pondoland form, referred to above, as much as does the 

 Upper Chico " Schl. " chicoensis (Trask) Anderson. 



