1886.] 1^ [Stowell. 



traced along the supra-orbital ridge to the mesa! angle of the eye, where 

 it joins the iulra-trochlear nerve. 



N. temporalis. — The temporal branch of the tempore facial nerve lies 

 close to the basal cartilage of the ectal ear and entad of the parotid gland. 

 The central portion communicates with the temporo-auricular nerve and 

 sends filaments to the attrahens muscle. 



At the dorsal border of the gland, and at the ventral border of the long 

 triangular cartilage which is directed meso-cephalad from the dorsal angle 

 of the ectal ear, and which is embedded in the occipitofrontal muscle, the 

 nerve divides ; one portion, passing ectad of the cartilage, is distributed 

 to the occipito-frontal muscle in the parietal region ; the other, passing 

 entad of the cartilage and along its ventral border, joins the supra-orbital 

 plexus already described. 



N. post-auricularis. — This nerve emerges from the stylo-mastoid fora- 

 men, and takes its course dorsocaudad in a groove upon the ectal surface 

 of the mastoid process. The central 5 mm. form a loop around the post- 

 auricular artery, one division lying ectad and the other entad of the 

 vessel. These may be described as the auricular and the occipital 

 portions. 



The auricular portion, at the peripheral end of the loop, lies apposed to 

 the ectal or caudal division of the artery,* and is distributed to the lateral 

 border of the occipito-frontal muscle. A ramulus from this nerve is given 

 to the retrahens muscle. 



The occipital portion lies between the two branches of the post-auricular 

 artery and is distributed to the caudal part of the occipito-frontal muscle ; 

 it communicates with a branch of the minor occipital nerve (N. occipitalis 

 minor). 



Hamuli to the Ectal Ear. — A ramulus from the auricular nerve is 

 directed toward the tip of the ear ; 10 mm. from its origin it gives otf 4-5 

 ramuli, which supply the dermal muscle of the latter half of the ectal ear 

 (probably the platysma); the nerve follows an arteriole around the caudal 

 and the dorsal borders of the ectal ear, and bending aroimd the cephalic 

 margin just distad of the attrahens muscle, it supplies a muscle (helicis 

 major?) upon the ental surface of the ear. 



From the ental surface of the facial nerve at the stylo-mastoid foramen 

 a considerable fascicle is directed dorsad close to the proximal cartilage of 

 the ectal ear and entad of the auricular muscles ; it penetrates the carti- 

 lage and terminates in a muscle (helicis minor?) upon its ental surface 

 mesad of a projection from the ental surface of the ear near the external 

 meatus. 



A third ramulus takes its orgin at the stylo-mastoid foramen ; it is ectad 

 of the post-auricular artery, and crosses the base of the second arteriole, 

 which is sent dorsad from the post-auricular ; it follows a small arterial 

 twig about 6-8 mm., when it perforates the auricular cartilage with the 



^ The artery divides just periplierad of the loop. 



