392 "• '^- POLLARD, 



The R. iiid. interims coutains motor portions, which pass ofiT 

 where the nerve divides into mental and submandibular branches, and 

 supply, the anterior branches, the muscles of the mental tentacle, and 

 the posterior the muscles of the submandibular tentacles. 



More exact descriptions of the muscles and the motor supply 

 must be reserved for a subsequent work. 



I have not observed any ophthalmic branch of the Trigeminus 

 though some fibres may accompany the Ophthalmicus superticialis of 

 the Facial. 



Sensory Tentacular Nerves of Trichoniycterus (Fig. 9). 



The Ophthalmicus profundus {B.o.p.) takes its exit from the 

 cranial cavity indepcsndently of the maxillary branches, and is at first 

 difficult to distinguish from the Ramus ophthalmicus superficialis of 

 the Facial. It runs below the rectus superior, above the optic nerve, 

 along the wall of the orbital region, proceeding forwards, outside the 

 olfactory organ, to reach the nasal tentacle, then dividing into two 

 branches which supply this tentacle. 



The great maxillary stem, taking its exit in front of the hyo- 

 mandibular, proceeds downward and forward to below the eye. Behind 

 the optic nerve it gives oö" the Ramus palatinus {R.pal.), which runs 

 inwards and downwards, through the anterior portion of the adductor 

 arcus palatini muscle (that part which moves the prepalatine piece 

 and to which it gives motor fibres). Reaching the base of the skull 

 it runs forward alongside the vomer and parallel to the edge of the 

 rostrum, and then reaching the premaxilla it divides into several 

 small twigs. 



Below the eye the great maxillary stem divides into two branches, 

 the Ramus maxillaris (li.mx.) and the Ramus mandibularis {11. md). 



Almost immediately, the R. maxillaris gives ofi' a Ramus pre- 

 maxillaris {R.pmx.) which runs outside the anterior portion of the 

 adductor arcus palatini, outside the articulating cartilaginous part of 

 the prepalatine piece, above the bony j)ortion, and internal to the 

 anterior cartilaginous part of the i)repalatine. Here it runs below the 

 olfactory organ, parallel to the Ramus palatinus, and dividing into tine 

 twigs, is lost in the tissue above the premaxilla at the tip of the snout. 



The Ramus maxillaris runs forward horizontally, above and some- 

 what internal to the coronoid piece, dividing in front into three branches, 

 the innermost of which supplies the skin internally at the upper 

 anterior angle of the mouth, the upper and outermost branch passing 



