No. 3.] MUSCLES AND NERVES IN AMIA CALVA. 33 
nerves, the rami ciliares longi (c/) ; and between them and the 
radix longa a nerve which was not satisfactorily traced in any 
of the dissections made. When this last nerve was found, it 
always accompanied the ciliary nerves as they ran forward and 
outward between the external and superior recti. Beyond that 
point it was always lost, appearing sometimes to fuse with the 
ciliary nerves, and at others to disappear in the general tissues. 
The portio ophthalmici profundi runs upward and forward 
above all the muscles of the eye, and joins the ophthalmic 
branch of the trigeminus while that nerve still lies under the 
overhanging cartilaginous roof of the orbit. The two nerves 
then fuse, the fusion being so complete that the two could not 
be separated in dissection. 
The two rami ciliares longi run outward, upward, and for- 
ward above the rectus externus, and below the rectus superior, 
and then join and become attached to the vein ov’, which runs 
from the orbital sinus to the outer edge of the eyeball. They 
lie along the upper, posterior side of the vein, and pierce 
the cartilaginous capsule of the eye internal to and below the 
point where the vein leaves it ; that is, near the insertion of 
the rectus superior, between it and the rectus externus. In 
larvae the nerves could be traced outward, along the inner 
surface of the sclerotic, towards the lens and cornea. 
The radix longa runs downward and forward toward the 
inferior branch of the oculomotorius, which it accompanies, 
closely applied to it, in its course between the superior and 
external recti. Immediately beyond those muscles it enters 
a small ganglionic swelling, the ciliary ganglion (gc), which lies 
directly in its course and, like it, is closely applied to the 
oculomotorius. Between the radix longa and the oculomo- 
torius no connecting or communicating fibres were found ; 
between the ciliary ganglion and the nerve such fibres, rep- 
resenting the radix brevis, were always found. From the 
ganglion, and as a direct continuation of the radix longa, a 
large nerve, the ciliaris brevis (cd), runs outward and forward 
along the outer surface of the envelope enclosing the efferent 
pseudobranchial artery, and enters the capsule of the eye with 
that artery through the opening for the optic nerve. No sym- 
