— 93 — 



organ 6 supraorbital; but in dissections of Trigla hinindo, where this intracranial branch is also found, 

 the anastomosis of the nerve with the branch of the facialis was readily established. Stannius ('49, 

 p. 85) says that this anastomosis is not found in Trigla gurnardus, and he also says that, in that fish, 

 the nerve arises partly from the root of the nervus lineae lateralis. This last statement is certainly 

 an error. 



In Scorpaena no intracranial branch of the vagus could be found either in the sections or in 

 the adult. 



The main root, in Lepidotrigla, traverses the vagus foramen, there being distinctly separable 

 into two bundles, one of which contains the motor and communis fibers, and perhaps also certain 

 of the general cutaneous fibers, while the other arises directly from the intracranial ganglion and must 

 be largely, if not entirely, composed of general cutaneous fibers. This latter bündle immediately turns 

 upward, accompanying the supratemporal branch of the nervus lineae lateralis; but it soon leaves 

 that nerve, and turning laterally and forward passes onto the external surface of the levator and 

 adductor operculi muscles and is there in large part distributed to the inner and outer surfaces of the 

 operculum, one branch of it, however, joining and anastomosing with the terminal fibers of the ramus 

 opercularis profundus facialis. Whether any fibers of this nerve accompany the supratemporalis 

 lateralis, or not, could not be positively determined, but none of them seemed to. 



The remaining fibers of the root of the vagus soon swell into the large ganglionic mass of that 

 nerve and were not further investigated. 



OCCIPITAL NEE V ES. 



The occipital nerves were not carefully traced, none of the series of sections prepared extending 

 far enough to permit it. They are shown in figure 28 as found in the adult Scorpaena. They unite 

 to form a single trunk which issues through the foramen in the exoccipital. 



NERVUS S Y M P A T H E T I C U S. 



A large sympathetic ganglion, the anterior cerebral sympathetic ganglion, lies in the trigemino- 

 facialis Chamber. Anteriorly this ganglion lies immediately ventral to, and is in contact with, the 

 anterior portion of the trigeminus ganglion, but posteriorly it is separated from that ganglion by the 

 jugular vein, the two ganglia being connected by several bundles of fibers. From the anterior end of 

 the ganglion a branch is always sent to join the radix longa of the ciliary ganglion, and, in the one 

 adult specimen of Scorpaena that was examined, a second branch is sent direct to the ciliary ganglion, 

 as already fully described. 



A second sympathetic ganglion lies ventral to the truncus facialis and is connected with that 

 truncus by one or two Strands; this ganglion sometimes being an independent ganglion and sometimes 

 simply an enlargement of a posterior prolongation of the anterior ganglion. From the bind end of 

 this second ganglion, the sympathetic trunk runs posteriorly along the side wall of the skull and swells 

 into a ganglion beneath the glossopharyngeus ganglion, and then into another beneath the vagus 

 ganglion; these sympathetic ganglia both being connected by fibers with the related ganglia of the 

 cranial nerves. 



