SUMMARY OF THE V+VII COMPLEX. 213 



probable that these correspond to the facialis fibres in the 

 corresponding nerve of Lota. The palatine nerve of Lota 

 and other teleosts is unquestionably the same as the nerve 

 of that name in ganoids and other forms. The communis 

 fibres for the upper lip which correspond to the r, rostri 

 interni of Acipenser, if present in Lota, doubtless go out 

 with the r. maxillaris as in Menidia, and were overlooked 

 by Goronowitsch. I have personal knowledge that this is 

 the case in Gadus. 



XIII. — Summary of the Trigemino-Facial Complex. 



The trigemino-facial roots and ganglia can be clearly 

 separated and the peripheral distribution of each has been 

 traced. 



The motor VII supplies muscles belonging to the con- 

 strictor system of the facialis segment. It does not sup- 

 ply the geniohyoideus and intermandibularis muscles, 

 these being supplied by the motor V. The r. hyoideus is 

 a mixed nerve, motor and general cutaneous; the r. man- 

 dibularis VII is purely sensory, though two components 

 are represented, corresponding to the r. mandibularis 

 externus (lateralis) and the r. mandibularis internus (com- 

 munis) of the Amphibia. It contains no general cutane- 

 ous fibres save those derived by peripheral anastomosis 

 from the r. mandibularis V. 



There is a pre-trematic branch of the facial nerve, 

 which has an independent course in Menidia and inner- 

 vates the large (spiracular) pseudobranch and the mucosa 

 adjacent. This is not the chorda tympani of higher forms 

 and I consider it probable that this nerve is absent in 

 Menidia, though present in some other fishes. 



The accompanying tables express the relations of the 

 roots, ganglia and rami, 

 p 



