( 666 ) 
Especially from the location of these latter remains appears a 
topographical peculiarity of the Lobulus bifurcatus of Tarsius which 
Fig 4. 
perhaps is not unimportant for its significance. It is clear in fact that 
these parts of the pharyngeal Hypoplhysis are not lying in the sella tur- 
cica. They lie in the subarachnoideal sinus directly against the basal- 
plane of the brain, above the diaphragma sellae formed by the 
Dura mater. 
Finally I draw the attention to the fact that from Figure 4? it appears 
that it is chiefly the lateral parts of the Hypophysis vesicle that 
constitute the principal part of the pars glandularis of the fullgrown 
Hypophysis. The centralpart remains —- at least with Primates — 
more indifferent. 4 
The study of the earlier periods of development of the Hypophysis 
vesicle of younger embryos of Tarsius than I had to dispose of for 
the moment, is certainly to be recommended, especially with a view 
to the way in which the Lobulus Bifurcatus originates. 
