24 
Transactions of the Boyal Society of South Africa. 
The specimen which forms the type of Lycosaurus tigrinus is badly 
preserved. It appears to have a dental formula of * 5, c 1, m 4 or 5. 
The other specimens referred to this genus are all very imperfect. 
CiSTECEPHALUS. 
A number of specimens which have been referred to this genus are in 
a bad state of preservation. Owen described six species, but these have 
been reduced by Lydekker to four, and I think it is necessary to still 
further reduce the number. The type of C. leptorhinus seems to me to be 
merely the snout of a species of Dicynodon. Specimen E 1689, which is 
referred by Lydekker to C. microrhimis, is also, in my opinion, the snout 
of a small Dicynodon. The specimens which form the types of G. planiceps 
and C. bathygnathus are both in a somewhat unsatisfactory condition, and 
I do not feel quite satisfied that either is distinct from the type species 
0. microrhinus. The imperfect skull which forms the type of G. arctatus 
should probably be referred to a different genus. The specimen, 47088, 
pretty certainly does not belong to Gistocephalus at all, and more likely to 
one of the small Endothiodonts, such as OpistJioctendon. 
Gistecephahcs is a very interesting small Anomodont, and is evidently 
the last stage in the development of the Dicynodonts. It differs from most 
other genera in the absence of the preparietal bone. It has lost the post- 
frontal, and the prefrontal is very small. The postorbital, on the other 
hand, is of very large size. The palate is typically Dicynodont. 
Anthodon. 
In Owen's Catalogue three specimens are described under the name 
Anthodon serrarius, and all are said to come from Bushman's Eiver, 
halfway between Graham's Town and Port Elizabeth, in a marine 
formation containing teeth of fish, liassic shells, and fossil trees in great 
quantity." The type specimen consists of a badly crushed and imperfect 
skull; the second specimen is a jaw fragment with teeth. In Lydekker's 
Catalogue the skull is said to have come from naar Styl-Krantz, Sneeuwberg 
Eange, Owen's locality being stated to be incorrect. The jaw fragment, 
however, is given as coming from Bushman's Eiver. As the beds at 
Styl-Krantz are of Permian Age, and those at Bushman's Eiver Lower 
Cretaceous, it is pretty certain that there is some mistake somewhere. A 
re-examination of the specimens seems to me to clear up the confusion. 
The skull is evidently that of a small Pareiasaurian, and doubtless 
rightly referred to the Styl-Krantz horizon. It is too imperfect and too 
badly crushed to be quite certain of its relationships. It seems, however, 
just possible it may prove to be a young Propappus, but in the meantime 
it must be kept distinct. 
