ENDOCRANIAL ANATOMY OF OREODON 



283 



tical with that obtaining on the left hemisphere of Specimen T. 

 In Specimen II, however, the processus acuminis ectosylvii is 

 evident in its entirety. 



As in specimen first described the olfactory lobes are wholly 

 missing from Specimen II. The ridges for the infero-lateral 



Sin. I. lot. 



S.SS. 



S.lot. 



Tr. b.t«b'. 



venous sinuses are evident on the caudo-lateral surfaces of the 

 pyriform lobes in the same relation as in Specimen I, but the 

 superior sagittal sinus differs from that of the latter in deviating 

 in its entirety towards the left side. 



