Herrick, Cranial Nerves of the Cod Fish. 303 



maadibularis and adductor arcus palatini, or either or both the 

 first and second branches may be detached branches of the r. 

 pre-trematicus VII. My Fig. 5 shows how this nerve breaks up 

 and spreads out between the pseudobranch and the m. adductor 

 arcus palatini. 



Cole y;oes on to say, " Tlie remainder of the ventral fibers 

 of the hyomandibular pass outwards with the latter trunk and 

 the facial ganglion, but apparently have no connection with it, 

 and are continued as the pre-spiracular or chorda tympani divis- 

 ion of the facial." This is another nerve which I cannot identify 

 with certainty. In the first place, the language used is not 

 clear. Is the antecedent of //" trunk " or "ganglion?" If 

 the former, then this nerve might be the communis fibers which 

 enter the r. mandibularis V. The context, however, does not 

 favor this. If //refer to "ganglion," then it is probable that 

 the author has reference to a communis component entering 

 the truncus hyomandibularis, to form a r. mandibularis internus 

 VII (in the sense in which I have used this term, not in Cole's 

 sense). 



Cole has stated in two other places in this paper (pp. 162 

 and 202) and also to me in private correspondence that he has 

 found such a nerve in Gadus, adding that it "exactly corres- 

 ponds to the ' internal mandibular ' of AUis in Amia. " I have 

 failed to find any such nerve and am convinced that it does not 

 exist in my specimens, nor can I be sure from his figures and 

 descriptions what nerve he has in mind. Since Cole describes 

 that nerve as " the pre-spiracular or chorda tympani division of 

 the facial," it follows that I am not able to determine just what 

 he means by that term, though from the fact that he describes 

 it (p. 202) as arising from the base of the palatine and "forming 

 a part of tlie same bundle of fibers," I infer that he has refer- 

 ence to a part of what I have termed the r. pre-trematicus VII. 

 His nerve cannot include the whole of this ramus, since his 

 "posterior palatine " must also be included here. 



The problems connected with the chorda tympani I do not 

 propose to re-open here. The extensive discussion in Sec. 7 

 of my Menidia paper was written with full knowledge of the 



