On some Upper Beaufort Therapsida. 
307 
— the parasplienoid or vomer. In later life the basisphenoidal ossifications 
fuse with the posterior portion of this parasphenoid. 
According to this view, only the upper posterior portion of the bone 
called basisphenoid in such figures as the one published by the writer as a 
section through the brain-case of Alopecognathus minor (Ann. S.A. Mus., xii, 
p. 211), should be known by that name ; the remainder is the true para- 
sphenoid. 
EXPLANATION OF PLATE. 
Cynidiognathus longiceps, gen. et sp. nov. 
Fig. 
1. Top view of type skull. 
2. Side view of type skull. 
3. Ventral view of basicranium. 
4. Dorsal view of floor of brain-case. 
5. Anterior view of left quadrate mass. 
6. Ventral view of same. 
Cynidiognathus broomi, sp. nov. 
7. Side view of type skull. 
8. Top view of type skull. 
Mlurosuchus brotvni, Broom. 
9. Dorsal view of horizontal section through type skull. 
B.O., Basioccipital ; B.S., Basisphenoid ; d.s., dorsum sellse ; Ep.pt., Epipterygoid ; 
inner vest., inner vestibule of ear ; J., Jugal ; L., Lachrymal ; Mx., Maxilla ; N.„ Nasal ; 
P.Mx., Premaxilla ; P.O. (Pro. Ot.), Pro-otic ; Pal., Palatine ; Par. Oca, Paroccipital ; 
Po.O., Postorbital ; Pr.F., Prefrontal ; Pt., Pterygoid ; Q., Quadrate ; Q.J., Quadrato- 
jugal ; Smx., Septomaxilla ; Sq., Squamosal ; St., Stapes ; Tab., Tabulare ; Vo., Vomer. 
