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with certainty iü the sections, because of the fibrous tissues that here 

 lie between the several muscles. The branch that apparently inner- 

 vates it runs upward along the lateral surface of the ra. palato- 

 ethmoidalis superficialis to the ventro-lateral corner of the m. nasalis, 

 and there sends branches to it. 



After giving off this branch the remaining portion of the motor 

 nerve either pierces, or passes above, the hind edge of the fibrous 

 band that extends from the lateral labial cartilage to the cornual car- 

 tilage, and that has been already referred to. The several sensory 

 branches of the ramus maxillaris, which up to here have closely ac- 

 companied the motor nerve, remain ventral to the band. It has already 

 been stated that these sensory nerves, although actually lying ventral 

 to the ligament, lie external to it, and hence morphologically dorsal 

 to it if the lateral labial cartilage be the palatine element of the skull. 

 Under the same assumption, the motor nerve, which lies actually dorsal 

 to the ligament, must either lie morphologically ventral to it, or, losing 

 morphological relations to the ligament, lie internal to the cornual 

 cartilage, between it and the nasal bar. 



Having passed dorsal (in the sections) to the ligament, the motor 

 nerve then passes across the dorsal surface of the lateral labial carti- 

 lage, which up to here has lain internal to it, and thus reaches the 

 mesial surface of the dorsal process of that cartilage. It here sends 

 branches downward along the mesial surface of the m. copulo - tenta- 

 culo-coronarius, the branches certainly innervating that muscle, while 

 others apparently innervate the m. copulo- ethmoidalis. The nerve then 

 passes into the fibrous tissues that lie between the lateral edge of the 

 two transverse subnasal muscles, and the adjoining edges of the m. 

 copulo-tentaculo-coronarius and m. tentaculo-ethmoidalis, and can be 

 followed forward almost to the base of tentacle 2 . In this terminal 

 part of its course it probably innervates the m. tentaculo-ethmoidalis, 

 the two transverse subnasal muscles, and the m. ethmoideo-nasalis, 

 but it could be definitely traced only to the m. ethmoideo-nasalis. 

 These muscles all respond to electrical stimulation of this nerve. 



Wheter this nerve innervates the m. quadratopalatinus, as Für- 

 bringer asserts, or not, could not be determined. 



Acustico-facialis. 



The facialis nerve, as identified by Müller, arises from what 



must be an intracranial acustico-facialis ganglion. It arises from this 



ganglion near its ventro-posterior edge, and running laterally pierces 



the membranous cranial wall immediately dorso-anterior to the anterior 



