ee 4 
1426 
of fibres that reach the nuc. lat. from the dorsal and from 
the ventral side are not the continuation one of the other. The 
two systems are seen illustrated in fig. 2, in Seyllium canic. 
IT was able to determine here that the principal masses at 
least of both systems send off ramifications into the nucleus, 
and do not simply pass this nucleus. 
The dersal connection is formed by fibres, some of which can be 
traced in Seyllium till right below the molecular layer of the 
cerebellum. From the most frontal and also ventral portion of the 
ne. lateralis cerebelli fine fibres go downwards and at the same 
time frontally. The cells from which they originate lie together 
above the lateral angle of the 4 ventricle, some still in the 
caudal portions of the vellum (see fig. 5). They might form a 
separate nucleus. The fine fibres which originate therefrom run in 
a decidedly more frontal direction than is the case with the other 
fibrae arcuatae of more caudal origin, as can be seen especially in 
sagittal sections. They end apparently more dorsally in the neigh- 
bourhood of the III nuclei and of the central grey matter; the 
exact end, however, is difficult to determine precisely. These cells 
remind one of the ne. brachium conjunctivium of mammals. 
A group of fairly large polygonal celis below the angle of the 
ee 
ne. Cat cack’ 
Bee ~ Ne. vest biel 
NU MANA / 
* Poe y 
- ay Z SE ce. dem. é 
x We “Ae mot, 1 
JA reticud. 
zi ne reteubarig 
Aa 
ee 
Vic tefecu ares 
Fig. 3. Selache maxima. Fig. 4. Selache maxima. 
lat.cuckl. 
