OH Cretaceo^ls Cephalopoda from Ziiluland. 269 



of great significance, and, at any rate, there is no record from the West 

 Coast of Africa, of an ammonite indicative of the great Campariian 

 transgression which left the deposits of the Indo-Pacific type (with 

 Kossmaticeras and Lytoceratidae), and of the Atlantic type (with 

 Mortoniceras and Placenticeras) discussed by Kilian and Eeboul.* 



Of the twenty-nine species of Cephalopoda of the Umkwelane Hill 

 fauna, only one Ammonite (Pseudoschloenbachla umbitlazi) is identical 

 with a Pondoland species, in addition to a number of uncoiled and 

 straight forms (Bostrychoceras?, Diplomoceras?, BacnUtes), and to a 

 Nautilus. The assemblage of these genera suggests close affinity of this 

 South African fauna with that of the Egyptian Maestrichtian f ; but the 

 place of PseudoscJiloenhtn-fiid innbulazi, there, is taken by a new species 

 (doubtfully classed as a Cenomanian Schloeribachia by Blanckenhorn 

 [ in Coll.]), whereas the plentiful Eutrepltoceras desertorum, Zittel sp., 

 replaces the form here described as E. aff. dekayi, Morton sp. The 

 abundance of Bacvlites and the frequent occurrence of uncoiled 

 forms, in the Egyptian as well as the South African deposits, are 

 further points of similarity ; and it may be noted here that Mortoni- 

 ceras of the delawarense group are common to Tunis and Zululand, 

 and that Parapacliydigcus colligatus, also, has been recorded from 

 Tunis as well as from Madagascar. 



The two genera Mortoniceras and Parapachy discus, of course, are 

 other elements common to the two faunas, even if the species are 

 different, and it may be recalled here that New tout found " very few 

 of the shells [from Mauuan Creek] to occur in contiguous areas, 

 such as . . . Umkwelane Hill and . . . Pondoland. 

 The great abundance of large forms of Mortoniceras, with the equally 

 frequent occurrence of Hauericeras garden!, and the presence of the 

 (less common) Pseudoschloenbachia, form the characteristic feature of 

 the Pondoland deposits, and distinguish them from the Egyptian and 

 Madagascar faunas. In the " new collection of Natal fossils, at the 



c? 



Natural History Museum, far surpassing all collections hitherto 

 made" (Kossmat), out of a total of 105 specimens, 43 are Mortoni- 

 ceras. But it is significant that Hauericeras gardeni, a typical Indo- 



* Loc. cit. (1909), pp. 64-5. Through the kindness of Mr. Beeby Thompson, of 

 Northampton, the writer has lately (February, 1921), been able to study a new 

 collection from Angola, including Upper Senonian Ammonoids (Didymoceras)- 



t In Haug (loc. c<7., p. 1335), who considers the presence of the Campanian 

 to be doubtful, so that the great Upper Senonian transgression may here have 

 been of a slightly later date. 



I Loc. cit. (1909), p. 95. 



<Eec. Geol. Surv. India,' vol. xxviii (1895), pt. ii, p. 43. See also Newton, 

 loc. cit. (1909), p. 14. 



