On Some New TJicrocephatian Beptiles. 367 



Pardosuchus whaitsi, g. et sp. nov. 



This interesting Tlierocephalian was discovered by the Eev. Mr. 

 Whaits near Fraserburg Koad Station. The type specimen is the 

 front portion of the skull, broken off through the middle of the 

 orbit, and in very fair condition. 



The animal has a rather short snout, considerably broader in the 

 canine region than immediately behind this. The incisor region is 

 broad and rounded. At the orbital region the jugals pass markedly 

 outwards, and the back part of the skull must have been very broad 



The preniaxilla is of the usual shape, making with its neighbour 

 almost a regular semicircle in front. The incisor teeth are un- 

 usually small, and are fairly round on section. Posteriorly there 

 is a small edge which is serrated. The first 4 teeth are subequal, 

 and together measure 20 mm. ; then follows a smaller 5th incisor, 

 and behind this a very small 6th incisor. The septomaxillary is well 

 preserved and its outer part displayed. It forms apparently the 

 whole of the outer border of the nasal opening and sends a process 

 inwards a little below the middle of the opening. 



The maxillary bone has two canines the anterior of which is very 

 small. The large canine measures about 11 mm. in anteroposterior 

 diameter and is about 38 mm. in height. Behind it are evidences 

 of 5 small molars, which together measure 23 mm. So far as 

 preserved the molars are oval in section, and there is no evidence 

 of serrations, though there are no crowns at all well preserved. 

 The large canine has serrations on its posterior edge. 



The following are some additional measurements of the skull : — 



Width of snout at roots of canines 50 mm. 



Distance from front of orbit to front of snout 95 mm. 

 Distance between the orbits 40 mm. 



Pardosuchus ivhaitsi is more closely allied to Glanosuchics macrops 

 and to Scylacosauriis sclateri than to other known Therocephalians. 

 It is very distinct specifically from both these forms, but the dental 

 formula is so near that of the large type as to suggest the advisability 

 of placing it in the same genus. Glanosuchus macrops has, however, 

 a very differently shaped skull, and the fact that it has only the 

 single large canine with no trace of the small anterior one makes 

 it more convenient to keep the two genera distinct. 



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