66 bulletin: museum of comparative zoology. 



palatine ramus (Plate 3, figs. 6, 7, paU), which passes through the 

 foramen along with an artery and vein. The medullated fibers in this 

 twig can not be followed farther in their distribution than the limits of 

 this gustatory patch. 



Anterior to the orbit the viscero-sensory fibers are found in three 

 rami, a median (pal. m.), an intermediate {pal. Vm.), and a lateral 

 {pal. I.) ramus. All these rami carry a few coarser fibers not charac- 

 teristic of the palatine proximal to its anastomoses. These are inter- 

 preted as cutaneous sensory from V. 



(a) Ramus medialis. This is a continuation of the principal 

 branch of the palatine {pal.^). At about the level of the ethmoidal 

 ganglion {gn. eth.), or proximal to it, there is a division of the principal 

 ramus {pal.^), which results in a branch passing laterad to help make 

 up the intermediate ramus (Plates 2, 3, figs. 4, 6, 7), but the main 

 branch is continued forward as the ramus medialis {pal. m.). In the 

 dissection (Plate 3; fig. 7) this connection seems to be opposite the 

 ganglion instead of proximal to it. A very small group of sympathetic 

 ganglion cells is found at this junction. Another, shorter, branch con- 

 nects the median ramus with the ethmoidal ganglion, thus forming an 

 anastomosis with the nasalis. It would appear that this anastomosis 

 serves the purpose of bringing the ethmoidal ganglion into connection 

 with all the other rami. This connection of the median ramus "wdth 

 the ethmoidal ganglion has already been described (p. 54). Distal 

 to this point the median ramus continues an uninterrupted course to 

 the tip of the snout to innervate the mucous membrane of the pre- 

 maxillary region. This is a glandular region richly supplied vnXh 

 taste buds. It is produced by the median union of the lateral glandu- 

 lar gustatory folds of the two sides. The course of the ramus medialis 

 is just dorsal to the median edges of the palatine and vomer bones on 

 either side of the interscapular nasal cartilage (Plate 4, figs. 8, 9). 

 A short distance proximal to its distribution this ramus is joined be- 

 neath the cartilage with its fellow of the opposite side by a median 

 group of sympathetic ganglion cells (Plate 2, fig. 4, cl. gn. sy.). Distal 

 to this the united mediales continue forward for some distance as a 

 common median bundle; this bundle, however, splits again near the 

 region of its distribution. 



(b) Ramibs intermedius {pal. i'm.). This one of the terminal rami 

 of the palatine is formed by the union of two branches lying dorsad of 

 the palatine bone, one from maxillary V, just before its entrance 

 into the infraorbital foramen, the other from the ramus medialis at, 

 or proximal to, the ethmoidal ganglion. At all three of these junction 



