No. 3.] MUSCLES AND NERVES IN AMIA CALVA. 541 
ophthalmicus superficialis, and the other enters a canal in the 
front wall of the orbit median to the origin of the obliquus 
superior. The relations of these two nerves to the other nerves 
of the orbit is not given by van Wijhe, and no ophthalmic 
branch of the facialis is described. Collinge also (No. 109, p. 
516) gives no ophthalmic branch of the facialis, but, as he 
describes three dendritic systems along the supraorbital canal, 
and gives no branch of the facialis that could in any probability 
innervate the sense organs that must be associated with them, 
it seems probable that the nerve called by him and van Wijhe 
the r. ophthalmicus superficialis trigemini is in part the ophthal- 
micus facialis. The origin of the r. oticus from the superficialis, 
as given by Collinge, sufficiently proves that the latter nerve 
contains elements destined to supply the sense organs of the 
lateral canals, and those elements must belong to the facialis. 
The sensory canal system of Spatularia does not, therefore, 
in its innervation present such exceptional interest as Collinge 
has ascribed to it. 
In Acipenser, van Wijhe figures and describes a ramus _pro- 
fundus lying dorsal to the trochlearis, and dorsal to all the 
muscles of the eye. Ina later footnote (No. 129, p. 230) he 
says that the nerve so described is probably the ramus super- 
ficialis trigemini, and as nothing more is said of the profundus, 
the existence or non-existence of that nerve is left somewhat 
in doubt. Branches are sent from the nerve so described to 
the glands of the “Augenmuskelschlauche,” and the nerve does 
not join his ramus ophthalmicus superficialis, which is doubtless 
the ophthalmicus facialis. Goronowitsch, who seems to have 
published without having seen the later footnote of van Wijhe, 
rather confirms than otherwise the non-existence of a true 
profundus. According to him, the trigeminus I arises by two 
roots which never entirely fuse (No. 50, pp. 478 and 481). 
From these two roots three nerves arise, the rami maxillares 
inferior and superior and the ramus ophthalmicus profundus. 
This last nerve runs forward dorsal to the trochlearis and 
above the muscles of the eye, as described by van Wijhe. 
Schneider states that the ciliary nerve arises from. the oculo- 
motorius, a nerve which never has, according to van Wijhe 
