184 JouRNAL OF COMPARATIVE NEUROLOGY. 
The whole of the trigemino-facial ganglionic complex is 
intra-cranial. The general cutaneous fibers for the periphery 
arising from the Gasserian ganglion leave the complex through 
four foramena: (1) dorsal general cutaneous fibers accompany- 
ing the r. oticus, arising from the most dorsal and proximal 
portion of the ganglion. (2) A small number of fibers arising 
near the last pass down external to the dorsal lateralis root and 
to the rest of the Gasserian ganglion, where they are reenforced 
by others from-the ventral edge of the Gasserian ganglion just 
dorsally of the ventral lateralis root (see Fig. 2). Both groups, 
together with a small bundle from the geniculate ganglion, join 
the ventral lateralis root, all going out by a common foramen 
and forming the hyomandibular trunk. (3) By far the larger 
number of general cutaneous fibers enter the ‘‘supero-lateral 
strand,’’ leaving the cranium by a common foramen with the 
‘infero-medial strand’’ to enter the maxillary and mandibular 
branches of the trigeminus. (4) The remainder continue ceph- 
alad within the cranium, finally to enter the r. ophthalmicus 
superficialis trigemini. 
3. The communis root. 
This root does not enter the fasciculus communis, as in 
most other teleosts, to terminate with the IX and X nerves in 
the lobus vagi; but a special terminal nucleus is developed for 
it, the lobus facialis, or ‘‘lobus trigemini’’ of the older authors. 
Of course, the latter term is inadmissible now that we recognize 
this as a facial root. The morphology of this root and its cra- 
nial nucleus have been clearly presented by Kinessury (’97). 
It leaves the brain closely wedged in between the common 
lateralis root above and the large motor facialis below. The 
former of these roots at once divides, its ventral division pass- 
ing down the outer side of the communis root. A little farther 
cephalad the trigeminus root emerges and bounds the inner side 
of the communis root, the dorsal lateralis root, the ventral 
lateralis root and the motor facialis lying external to it (Fig. 
8). The communis root becomes ganglionated first on its 
lower border, then on the inner side, a group of cells continu- 
g 
