1405 
The defeet limited in this way may be removed, the wounded 
medial walls may be placed against each other and after uniting 
them, one obtains fig. 2 which represents the scheme of the brain 
of the evelopian monstrum, as it was found in the case published 
in the Folia neurobiologica. 
IN 
Fig. 2. Scheme of the remaining part of the telen- 
cephalon. Bulb, tractus and trigonum olfactorii are mis- 
sing. The gyri olfactorii posteriores lie side by side, 
alongside the fissura baso-medialis (f. b. m.). Laterally 
from it the Insula is found. 
The scheme in fig. 2 demonstrates that in the midline, frontally 
from the nervi optici, placed against each other, a baso-medial 
fissure or aperture appears, which is bordered on both sides by the 
posterior end of the gyri olfactorii posteriores (g. olf. post.) which 
have approached each other as soon as the base of the brain 
between the two insulae is lost. The gyrus olfactorius posterior 
helps to form the limen insulae and therefore it is found laterally 
bordered on both sides by the Insula (INS). Most distinetly these 
relations are seen on the left hemisphere (ef. fig. 4). 
In fig. 3 and in fig. 4 a drawing is made after a photograph of 
the dorsal and of the ventral face of the brain of a human cyclops. 
The cytologic research of the pallium ‘of this brain demonstrated 
that on both sides along the fissura baso-medialis, in reality corre- 
sponded with the structure of the gyrus olfactorius posterior. In 
the convolution laterally from it the cortical structure of the insula 
was seen, with a claustram bordering it. 
