On Cretaceous Cepkalopada from Zididand. 305 



the junction of the Umsiuene River and the Manuan Creek. These 

 horizons of the Upper and Upper Middle Albian, according to the 

 succession tentatively suggested by the writer in his description of the 

 Albian fauna of Angola, appear to be : 



Upper rostrata horizon . . " post-ros^rafo" (XIII, XII).* 



Lower ,, . . . " rostrata s.s." (XI). 



Upper varicosum horizon . . " prerostrat a " (X, IX&). 



Lower ,, ,, . . "bouchardianum" (IX a). 



Upper cristatuni . " crlstatmu s.s." (VIII). 



Lower ,, . . " cornutum " (VII, VI). 



It is to be hoped that further collecting will be done, with a view to 

 tracing the succession of the Manuan Creek Albian in detail and eluci- 

 dating the somewhat uncertain relations of, e. </., the outcrop of the 

 " Umsineue deposit," exposed chiefly in the bed of the southernmost 

 tributary of the Manuan Creekf and apparently comprising Middle 

 Albian and Campanian forms, with the neighbouring Couiacian and 

 Cenornaniaii exposure near the junction of the Umsinene River and the 

 Mauuan Creek. It may be added that the forms of the highest Albian 

 (upper rostrata zone, with Stoliczlcaia) all come from one locality, namely 

 the " south side of the Manuan Creek Valley " (V in the list), and 

 that none of the other localities apparently have yielded examples 

 that are referable to this highest Albian. In the case of the Lytoceras 

 and the Desmoceratids (2, 3 and 7 in the list), the comparison with 

 Indian species might suggest a high horizon in the Albian, only the top 

 of this formation, apparently, being found in India; but the Ammonites 

 probably are not specifically identical. On the other hand, it is just 

 these forms that connect the Zululand fauna with the types special to 

 the Indo-Malgascan Province, for nearly all the remaining Ammonites 

 correspond with well-known European types, with the exception of 

 PseudopJiacoceras inaii/iarteiise and of Dipoloceras sp. nov., Avhich are 

 more closely comparable with American^ species, and which, e. cj. in 

 Mexico, occur several hundred feet below the equivalent of the rostrata 

 zone. The writer, in another place, when discussing the relations of the 

 Angola fauna, referred to the probable immigration of these elements 

 into the African region from South America along the southei'ii edge of 



* These numbers refer to the beds at Folkestone. 



f Anderson, loc. cit. (Third Keport, 1907), p. 58. 



J Lemoine (' Pal. Nord. Madagascar,' 1906, pp. 204-5) recorded " Schloenbachia 

 roissyi (= Schl. aculo-earinata, Shumard) " and " S. mir/rpellana, d'Orbigny sp. 

 (= S. buarquiana, White sp.)/' but in the following year, Boule, Lemoine and 

 Thevenin described a S. (Mortonu-eras) cf. inflatiformis, Szajnocha, which 

 probably is a Subschloenbachi/i , whereas their " Lower Cenomanian Spheno- 

 discus" may be a PseudopJiacoceras, allied to P. manuanense and P. btiarquianum. 



