(52) 



2. On a Neiv Dinocephalian from the Gouph. 

 (Plate X.) 



The specimen on which the following description of a new genus 

 and species is based is No. 2678 in the South African Museum collec- 

 tion, and was collected by the Rev. J. H. Whaits near Vivier Siding, 

 30 miles south-west of Beaufort West, from beds in the Pareiasaurus 

 zone. It consists of the almost perfect skull which has undergone 

 considerable weathering. The general shape and features of the 

 skull differ sufficiently from the other Dinocephalian genera to 

 warrant its inclusion in a new genus and species, and for it I 

 propose the name Struthiocephalus whaitsi, g. et sp. nov. 



The chief generic characters are as follows : Skull large ; snout 

 relatively long and slender ; frontal and temporal regions not so much 

 elevated above snout as in Tapinocephalus ; eyes look forward and 

 outward ; heavy overhanging supraorbital crests ; temporal fossae 

 larger than orbits, elliptical in shape with shorter axis parallel to 

 axis of skull ; teeth weak, undifferentiated, and few in number. 



The following table gives some of the chief measurements : 



Greatest length 580 mm. 



Greatest breadth 355 , , 



Greatest height 230 ,, 



Length of snout to back of internal nares 200 ,, 



Breadth of snout at back of internal nares 230 ,, 



Length of orbit 95 ,, 



Height of orbit 60 ,, 



Length of temporal fossa 80 ,, 



Height of temporal fossa 148 ,, 



Interorbital width at front of orbit 180 ,, 



Interorbital width at back of orbit 295 ,, 



Intertemporal width 130 ,, 



Basal length 515 ,, 



The snout is slightly distorted from its true position, the angle of 

 distortion being about 15 to the right. The premaxilla bears three 



