534 ALLIS. [VoL. XII. 
pathetic fibres could be traced to the ganglion, nor could I 
find any indication of a branch running forward along the 
oculomotorius to and beyond the inferior oblique muscle, such 
as Ewart describes in sharks and rays (No. 30). 
In larvae, the branch of the profundus ganglion found in the 
adult between the ciliares longi and the radix longa was not 
found, a third portio ophthalmici profundi connecting the pro- 
fundus ganglion with the ophthalmicus superficialis trigemini 
was, however, often found ; always much shorter than the other 
portions, and always running directly outward from the ganglion 
to the nerve, instead of outward and forward. This third 
branch was never found in the adult, owing doubtless to the 
fact that the dissection at this point is exceedingly difficult. 
A tough membranous tissue surrounds all the parts, and six 
dissections, at least, of this particular region had to be made 
before one sufficiently complete for illustration had been 
obtained. 
The ciliary ganglion in larvae always appears in transverse 
sections as a well-rounded mass attached to the upper, outer 
surface of the inferior branch of the oculomotorius, relatively 
much larger than in the adult, and enclosed in a thick fibrous- 
like envelope. It contains small cells, similar in appearance 
to those found in the ganglion on the under surface of the 
olfactorius, and not at all like those found in the profundus 
and the other cerebral ganglia. No ganglion cells were found 
in any part of the oculomotorius itself, and the ganglion cells 
described in that nerve in the adult of other forms, and con- 
sidered by different investigators as the ganglion or ganglions 
of the oculomotorius, are in all probability simply parts of the 
ciliary ganglion of Amia scattered along the ciliary nerves or 
roots, as Ewart finds them in sharks and rays (No. 27), instead 
of being collected into a distinct and definite mass, as in Amia. 
I do not mean by this to express any opinion as to the origin 
of the cells, for the disposition of the parts in the youngest 
stages of Amia that I have examined might be taken to 
indicate an origin from or in connection with the profundus 
ganglion alone, or from that ganglion and the oculomotorius 
combined. 
