(127) 



14. Investigations in South African Fossil Reptiles and Amphibia 

 (Part 10). By S. H. HAUOHTON, B.A., F.G.S., Assistant 

 Director. 



10. Descriptive Catalogue of the Anomodontia, u-if/i especial reference 

 to the examples in the South African Museum (Part 1). 



(With 3 Plates and 20 Text-figures.) 



THIS first part of the Catalogue of the Anomodontia contains forms 

 assigned to the genus Dicynodon and to other genera without molar 

 teeth allied to it, but omits Lystrosaurus. In view of van Hoepen's 

 recent additions to the named species of this latter genus, a 

 revision of the genus is necessary. The South African Museum collec- 

 tion contains a large number of very finely preserved Lystrosaiiru* 

 skulls ; but until further and somewhat fuller descriptions with 

 figures are given of van Hoepen's forms from Harrismith it is deemed 

 better to allow the revision of the genus to stand over. 



The genus Dicynodon is an exceedingly troublesome one to work, 

 on account of the large variety of forms which have been assigned 

 to it, forms the types of which are now deposited in collections in 

 widely separated parts of the world, which types are occasionally 

 rather fragmentary and not particularly well defined. The genus, 

 in its broad sense, ranges from the bottom to the top of the 

 Beaufort Beds ; and although certain of the described forms have 

 been placed in other genera such as Eocyclops, Diictodon, Kanne- 

 meijeria, and the like, the relations between all the types are very 

 close. 



Of recent years the collection in the South African Museum has 

 been enriched by a number of very good Auomodont skulls, mainly 

 through the efforts of the Kev. J. H. Whaits and of the Museum 

 collectors ; and these enable us to obtain a partial survey of the sub- 

 order, as the collection contains skulls from each zone of the Beaufort 

 Beds. Some of them can be correlated with some degree of certainty 

 with already-described forms. Others have characters distinguishing 

 them from these forms and, at the risk of adding to the nomenclature 



