Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . nae, it is probably correct to refer the Zululand material to Besairies species,and to regard the holotype of M. {A.) australis as an immature specimen. Differences between M. {A.) australis and the majority of the otherM. {Australiella) species described from Madagascar, M. {A.) fallotiyM. {A.) besairiei, M. {A.) subaustralis, M. {A.) moreti, M. {A.) antsirasiraensis,M. (A.) tintanti, and M. (A.) coronata are difficult to formulate, as they seem CRETACEOUS FAUNAS FROM SOUTH AFRICA 297 to grade into each other bo
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . nae, it is probably correct to refer the Zululand material to Besairies species,and to regard the holotype of M. {A.) australis as an immature specimen. Differences between M. {A.) australis and the majority of the otherM. {Australiella) species described from Madagascar, M. {A.) fallotiyM. {A.) besairiei, M. {A.) subaustralis, M. {A.) moreti, M. {A.) antsirasiraensis,M. (A.) tintanti, and M. (A.) coronata are difficult to formulate, as they seem CRETACEOUS FAUNAS FROM SOUTH AFRICA 297 to grade into each other both in a vertical and in a lateral sense. The majorityof these species occur at the same stratigraphic level in Madagascar, and differmainly in details of whorl section and appearance or attenuation of view of the normal wide range of intraspecific variation, the authors doubtif all these names should be retained. Australiella australis ingens was separated by Collignon (1970: 62) fromthe nominate subspecies on the basis of the strong development of the ventro-. Fig. 223. Menabites {Australiella) australis (Besairie, 1930). following that of Figure 222, and preceding that of Figure 224. x 1. 298 ANNALS OF THE SOUTH AFRICAN MUSEUM
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
