South African Fossil Reptiles and Amphibia. 173 



midline of the basicranium. The floor of the brain-case is horizontal 

 in front of the foramen magnum with a median swelling flanked by a 

 slight groove on each side. Just in advance of the inner opening for 

 the 12th nerve the floor dips suddenly, and then rises as suddenly to 

 the opening for the 7th nerve. The sides of the brain-case are 

 vertical. 



All the foramina for the nerve-exits are low down in the cavity. 

 They agree closely in position with those figured by Broom for Dicy- 

 nodon (Proc. Zool. Soc., 1912, PI. LVI). Between the small opening 

 for the 12th nerve and the larger one for the 9th-l 1th nerves there 

 is a broad transverse ridge of bone which crosses the floor of the 



o 



cranial cavity. The opening for the 9th-llth nerves is connected 

 with the upper end of the vestibule by a narrow groove. The upper 

 end of the vestibule is in ;i pit in the floor and lies considerably lower 

 than the other openings. The opening for the 7th nerve is small. 

 The vestibule for the ear was very long, but nothing can be seen of the 

 osseous canals. 



Type. Skull and lower jaw. (S.A. Mus. Cat. No. 3017.) 



Locality. Winnaarsbaaken, Albert, C.P. 



Horizon. Upper Beaufort Beds. (Cynognathus zone.) 



KANNEMEYEUIA LATIFRONS (Br.). 



1899. Broom, Dicynodon latifrons. Ann. S.A. Mus., i, p. 452 ; pi. x, 

 tigs. 1-3. 



Founded on an imperfect and crushed skull. Maxillary breadth 

 just larger than frontal breadth. Orbits directed laterally. Frontal 

 region broad and flat. Nasals greatly developed. Parietal crest 

 narrow. Parietal region inclined obtusely to the frontal. Pineal 

 foramen placed just behind postorbital bar. No postf rental. Ap- 

 parently no preparietal. Frontal width four times as great as the 

 intertemporal. Postorbitals do not touch one another. Skull deeply 

 hollowed in front of the pineal foramen. 



Type in the Port Elizabeth Museum 



Locality. Burghersdorp, C.P. 



Horizon. Upper Beaufort Beds. 



