376 Annals of the SoutJt African Museum. 



the maxilla. To the inside of this row, and separated from it by 

 a deep groove, is a round bony ridge thickly studded with large 

 numbers of small rounded teeth, very like those on the palatine. 

 These teeth appear to be borne by the splenial. 



There can be little doubt that the specimen here described belongs 

 either to the same genus as Lydekker's specimen or to a closely 

 allied one, but we now know that that genus cannot be Eryops : in 

 fact, it is not even allied to Eryops. 



In 1889 V. Amnion, in describing " Die permischer Amphibien der 

 Eheinpfalz," figured and briefly described, under the name Macro- 

 merion Gilmbeli, a small fragment of the upper and lower jaws of a 

 Labyi'inthodont very closely allied to the South African forms, and 

 most probably belonging to the same genus. The genus Macro- 

 merion was described by Fritsch in 1879, the type species being 

 31. Schioarzcnhenjii. In 1885 and 1889 a number of other species 

 w^ere added, some very doubtfully, to the same genus. It is pretty 

 manifest, however, that the jaw fragment described by v. Ammon 

 does not belong to Fritsch's genus, but to a new genus to which 

 also belong the two South African species. 



This new genus maybe na^med Bhinesuchus, and it is characterised 

 as follows : Skull probably like that of Capitosaiirus in general 

 shape ; maxiliaries and dentaries bearing each a row of uniform 

 teeth ; inside of the maxillary teeth are large numbers of very small 

 teeth, probably borne by the palatines, and, covering much of the 

 pterygoids, and continued across the back part of the parasphenoid ; 

 similar small teeth are found inside of the teeth borne by the 

 dentaiy ; they are probably on the splenial bone ; the median 

 anterior part of the parasphenoid is narrow. 



The genus Nyrania, described by Fritsch, has the pterygoids and 

 palatines similarly covered by small teeth, but there are apparently 

 no teeth on the parasphenoid, and there are no small teeth on the 

 lower jaw. The shape of the skull also differs considerably in the 

 two genera. 



The species described by Lydekker has the teeth much larger and 

 fewer in number than the species here described. The German 

 species also appears to have much larger teeth. It is, of course, 

 at present impossible to very clearly differentiate the different 

 species, but we may regard all three as distinct. The genus 

 Bhinesuchus would thus have the three known species : — 



Bliiiicsiiclius Gilmhcli (v. Ammon). 

 Bhinesuchus africcmus (Lydekker). 

 Bhinesuchus Whaitsi, Broom. 



