CONTRIBUTIONS TO THE KNOWLEDGE OF THE REPTILES 
OF THE KARROO FORMATION. 
By Dr. E. C. N. VAN Hoepen, M.I. 
4. A New Pseudosuchian from the Orange Free State. 
The fossil under description is in the Bloemfontein Museum, and was 
found in a quarry near Kosendal, Orange Free State. It consists of a 
nearly complete individual on two slabs of matrix which unfortunately 
do not fit together. The fossil is mostly an impression of the right side 
of the skull and limbs, and besides this, consists of some vertebrae, a few 
ribs, a great part of the tail and of dermal ossifications. Some of the 
impressions are filled with a thin layer of ochre. 
Through the bad way of preservation sutures are obliterated. 
The Skull. 
The preorbital part of the skull, the jugal and the postorbital with 
the mandible, are present as impressions of the right side. The postorbital 
part is very puzzling. The external nares are placed right in front 
and they are practically round. The preorbital cavities are small. 
They are a little larger than the external nares and have the shape of a 
triangle of which the base is parallel with the edge of the maxillary and 
the top and front angles are blunted off. The orbit is a little longer than 
broad and its lower and hinder rims form a nearly right angle. The tem- 
poral openings are indistinct. The lower temporal opening is large, broad 
at the bottom, and reaches nearly as high as the orbit. I am in doubt 
with regard to the supratemporal opening and the hinder part of the skull. 
The premaxillary forms the lower border of the external nares. It 
supports three small pointed thecodont teeth. The two large ones behind 
these are probably already on the maxillary ; they are separated from the 
front teeth by a small gap. These teeth must naturally have passed along 
the outside of the dentary. Behind them a part of the upper jaw is missing. 
A large tooth of the lower jaw has penetrated in this gap. Its impression 
stands a little further out from the matrix than the adjoining parts of the 
upper jaw, and I therefore conclude that the upper jaw was slightly bent 
inwards to allow this big tooth to pass along its outer side. The following 
maxillary teeth, numbering fourteen, are all small and diminish gradually 
in size going backwards. They occur till nearly below the middle of the 
orbit and are clearly thecodont. All that can be said of the maxillary 
is that it forms the lower border of the antorbital vacuity. 
A narrow bridge separates the orbit from the preorbital opening, 
but it cannot be made out to what extent the jugal and the lacrymal parti- 
cipate in it. 
The postorbital bar is directed upward and slightly forward, whereas 
in all the known allied forms this bar is directed upward and backward. 
