NEEVES OF THE DOGFISH 



335 



V merit especial consideration. The writers reserve this topic 

 for future discussion, believing that only by a comparative study 

 of many elasmobranch forms can any satisfying conclusions be 

 reached in this particular subject. 



Fig. 32 A horizontal section through the V-VII-VIII ganglia of the right 

 side, showing the distinct root of the ramus oticus VII. X25. 



The ramus ophthalmicus ^uperficialis V of Mustelus arises, as 

 previously stated, from a distinct intracranial ganglion. It 

 passes out of the skull as a large compact nerve on the ventral 

 border of the r. oph. spf. VII. It accompanies the latter ante- 

 riorly, sending off several small branches that combine with 



