1582 
deseribed in fig. 11 is found back in ZvekeRrKANDI’s drawing. From 
this may be concluded, that in all these cases the curved line was 
located behind the s. parieto-oce. lat. (m-+ m’) on the occipital 
surface. The result of this again is, that on the front surface 
of the ape-fissure two different parts of our brain-mantle are 
found, i.e. anterior to the suleus 7 + m’ the parietal, posterior 
to it the occipital surface. 
What is indicated on fig. 12") with 1 and 2, lying behind the 
s. par. oec. lat belongs all to the occipita! face, and has been lying 
primary on its surface. 
A totally opposite aspect is shown to us in fig. 18. In this case 
it is assumed that the centre of greater growth is not lying on the 
occipital pole, but more to the front, e.g. next to the hind lip of 
m+ m’, near +. 
The curved line is naturally located much more in front (dotted 
line) and therefore the ape-fissure will be formed anteriorly of the 
suleus 7 + m’. The direct result of this is, that the caudal part of 
the /+ e (s. interpar.) and also the mm + m’ will not be lying on 
the front face of the ape-fissure, but on the hind face of it. 
Yanterio surface cf the ape-fissure. 
Curved line ape-flssure. 
ant} Posterior surface of the ape-fissure. 
J 
voorlip = front lip, achterlip = hind lip, 
pool = pole. 
Fig. 13. 
That this conception is not purely theoretical, bui reflects reality 
is demonstrated in fig. 14, taken from the paper of ZUCKERKANDL 
in which we clearly see, that the 7+ e suleus (@ on (fig. 14) 
1) I added the letters 7-+-e and m+ 1m! to the figure. 
