NoRRis, Nerves of A?nphiuma. 535 



of the snout from near the anterior end of the latter posteriorly 

 about halfway to the eye. The fibers, if any, given off to the 

 lateral gland are certainly few in number, for I have been unable 

 to detect them. The ramus is characteristically cutaneous and the 

 name, r. glandularis II, is a misnomer. 



The next branch given off from the oph. prof. {{op. j)) is the 

 one that anastomoses with the r. palatinus VII. The union occurs 

 at the posterior border of the nasal capsule. The palatine rapidly 

 ascends from its ventral position and the trigeminal ramus descends 

 to meet it. As the two nerves approach each other each divides 

 into two parts, and the union occurs between the branches in pairs, 

 so that there result two nerves, each containing general cutaneous 

 and communis fibers (fig. 26). The dorsal of the two nerves 

 thus formed ascends slightly and divides into three branches. 

 The dorsal one of these three branches {op.-pal.d.) from its mode 

 of formation and from the appearance of its fibers consists of 

 general cutaneous fibers only. It may divide and its two divisions 

 on entering the nasal capsule run along the lateral wall of the 

 nasal epithelium on the dorsal border of Jacobson's organ to the 

 extreme anterior end of the latter. The posterior wall of the nasal 

 epithelium is supplied by branches {op.-pal.pn.) derived from this 

 same source, of general cutaneous fibers only. The ventral pos- 

 terior nasal epithelium is supplied by a branch from a division with 

 mixed components {0p.-pal.7nu.), and its exact composition has 

 not been determined. The other two branches of the dorsal of 

 the two nerves resulting from the palatine-trigeminal anastomo- 

 sis {op. -pal. I.) pass to the lateral portions of the roof of the mouth 

 innervating the lateral teeth, etc. The ventral branch of the anas- 

 tomosis {op. -pal. 771.) passes ventrally into the inner ventral angle 

 of the nasal capsule and running forwards supplies the median 

 series of teeth, etc. From it branches are also given off to the 

 posterior ventral nasal epithelium {0p.-pal.7nr1.). According to 

 the figure given by Wilder this ramus of the trigeminus that 

 anastomoses with the palatine comes from the nasalis internus. 

 The origin of the two from the main trunk of the ophthalmicus 

 profundus is such that it is not improbabb that in some cases 

 they may arise by a common branch. The mode of anasto- 

 mosis, it will be seen, is like that described by Coghill in Am- 

 blystoma. 



The remaining portion of the ophthalmicus profundus divides 



