268 Annals of the South African Museum. 



parallel to the Mortoniceras-Diaziceras-Pseudoschloenbachia assemblage, 

 here recorded from Umkwelaiie Hill. 



It may be added here that whereas, in East Africa, the succession 

 from the Bathonian up to the Aptian* is represented by generally 

 ainmouitiferous deposits, in Zululand, as probably also in Mozain- 

 bique,f there is a fairly complete succession from the Aptian to the 

 Maestrichtian, with the exception of the Turoniau, the presence of 

 which in Madagascar also has not been clearly demonstrated. It is 

 of interest to note that the Couiacian Peroniceras, inentioned above, 

 and which is almost indistinguishable from a Bohemian P. subtri- 

 carinatum, d'Orbiguy sp.,+ is closely comparable with a type that 

 occurs in India and Madagascar and has also been recorded from the 

 Cameroons. Marine connection across Africa certainly did not exist, 

 and the writer thinks the evidence favours Lemoine's contention 

 that the communication between the Indian and Mediterranean seas 

 did not, as Kossmat thought, take place v i<1 the south of the African 

 continent. The genus Peroniceras also occurs in Tunis and in the 

 Egyptian- Syrian Couiacian, and the Turoniau faunas (with Far/esia 

 and Neoptijchites) of Tunis and India are closely allied. Unworked 

 Nigerian collections with Pseudofissotia, Vascoceras, etc. (Falconer, 

 Kitson, and Temple Colls., British Museum), show that during the 

 Turouiau (as during the Albiaii) there was connection between the 

 Cameroons Bay and the great sea that covered the whole of 

 the Sahara 1 1 and extended across to India, but no further (Turonian) 

 extensions down the east or west coasts of Africa, can be traced by 

 ammonitiferous deposits, though a different facies may represent the 

 Turonian both in Angola and in Madagascar.*[ Peroniceras dravi- 

 dicum, thus, probably came to the Cameroons by way of Tunis, and 

 not via South Africa. The distribution of this form, therefore, is not 



* See Zwierzycki, "Ceph. Faiin. d. Teudaguru-Sch. i. Deutsch-Ostafrika," 

 loc. cit. (1914), pp. 90-91 ; also Spath, " Jurass. Anim. fr. E. Africa," 'Geol. Mag./ 

 vol. Ivii (1920), pp. 311-20, 351-62. 



t The Dipoloceratidae of the Albian are poorly represented there, and 

 " Mortoniceras cfr. candollei" in Choffat (' Conducia,' 1903, p. 24, pi. vi, figs. 3 

 and 4) cannot be definitely identified as a form of the Upper Albian candolli- 

 anus group. 



X B.M. No. 88991, Coll. Dr. Fritsch. 



' Et. Geol. Nord de Madagascar,' Paris, 1906, p. 397. 



|| A collection of Turonian Ammonites from Sinai (T. Barron Coll.), described 

 in an unpublished paper by Crick, contains Hoplitoides ? and Vasroceras. 



T According to Kilian and Reboul (loc. cit., 1909, p. 64), this Turonian 

 Mediterranean, extending from Brazil to India, did not communicate directly 

 with Madagascar. 



