IV 



Journal of Comparative Neurology. 



which is re-enforced by a contingent from VIIj(4). VII., arising dorsally 

 passes principally into the buccal VII (B) but a portion of it re-enforces 

 VIl3(6). As the superficial ophthalmic and buccal VII innervate canal 

 and ampuUary organs, it is obvious that VIIj and VII, are lateral line 

 roots, leaving VII3 to represent the facial proper. VII3 arises ventrally 

 and the trunk composed of it and the contingent joining it from VII3 is the 



Wx- Mm. 



hyomandibular (H). While passing through the cranium, the hyoman- 

 dibular" expands into the large hyomandibular ganglion (9), which was not 

 resolved into lateral-line and facial-proper portions but which, I believe, 

 could thus have been resolved. On entering the orbit, the large pala- 

 tive nerve (Pl) is immediately given off ; and this, on being teased, was 

 found to have a clump of nerve-cells at its base(io). Arising at the very 

 base of the latter is another and important nerve — the chorda tympani 

 (C.T) or pre-branchial division of the Vllth." The hyomandibular fur- 

 ther divides into four trunks. Of these two are the two branches of the 

 external mandibular innervating ampullae and canal organs, the other 

 two are two divisions of the '* ramus opercularis " and are regarded 

 by Cole as together being equivalent to the post-branchial division of 

 the VII. 



