630 



PROF. R. A. DART ON TUK 



most points with those of Proseuglodon atrox, save for the more 

 marked sagittal sinus, larger Gasserian gangUa, and a greater 

 backward thrust of the paraflocculus. 



From the dorsal aspect it is evident that there is a greater 



Text-figure 12. 



Cerebral hemisofisrc. 



Ssqittal sinus. 



Olfactory 



„ , Jugular leash 



Gasserian ganglion Middle cerebral vessels ■' 



Lateral view of endocranial cast of Zcuc/lodon intermedins, sp. nov. M. 10173. 

 About ^ nat. size. 



lateral thrust of the paraflocculi also, a fact still more emphasized 

 in the posterior view. The prominence of the sagittal sinus is 



Text-figure 13. 



, Olfactory peduncle. 



Ma'ifitlary division 

 of trigeminus. 



Say/ital sinus 



Trigeminus & middle 

 cerebrjl vessels. 



■Paraflocculus, 



Jugular leash. 



Dorsal view of endocranial cast of Zeuglodon intermedius, sp. nov. M. 10173.. 

 About ^ nat. size. 



Avell shown from the dorsal aspect also, but tlie median tentorial 

 depression is not quite so pronounced. 



An arresting feature of this cast is the transversely running 

 furrow subdividing the central mass of the cerebellum and' 



