104 



THE STRUCTURE OF MAX 



directly connected with the zygomaticus minor, the orbicularis 

 palpebrarum, the auricularis anterior, and the transversus nuchse. 

 On the other hand, however, the fact that the mimetic musculature 

 is innervated by the facialis (n.fc., Fig. 69), a nerve which, by 

 location and distribution, is connected with certain muscles of the 

 visceral skeleton, compels us to conclude that this (the mimetic) 

 musculature has to some extent wandered from its original 



FIG. 67. DIAGRAM OF THE DISTRIBUTION OF THE PLATTSMA OVER THE HEAD. (After 

 Gegenbanr.) The larger areas are marked with Roman figures, the smaller with 

 letters (cf. with Fig. 70). 



position. It would appear to have moved up from the region of 

 the lower jaw, 1 and to have entered into close connection with the 

 soft parts surrounding the auditory and buccal apertures, i.e. with 

 the lips and with the pinna, which are themselves of secondary 



1 According to Killian, it is more than doubtful whether Huge is right in 

 assuming a post-auricular upward wandering of the platysma. Killian holds that 

 the pars occipitalis of the platysma had from the beginning a dorsal position, and 

 that it is nothing more than the posterior superficial layer of the dorsal portion of 

 the musculature of the hyoid arch, as it appears not only in most Mammalian 

 groups, but also in many species of Birds, e.g. Owls, in which even external auditory 



