FACIAL MUSCULATURE OF THE JAPANESE 643 
Eph 
Figure 1 
Fig. 3. Chinese III. On the whole, the facial musculature has quite firm 
fibers. The platysma forms a single mass; the pars aberrans, divided like a V, 
extends beyond the line from the angle of the mouth and the auditory meatus; 
the posterior portion reaches the lateral marginal bundle of the orbicularis oculi, 
and the anterior passes, beneath the orbicularis, beyond the zygomaticus major 
and minor. The M. triangularis is broad at the edge of the jaw. The risorius 
shows considerable development; the zygomaticus is penetrated at its insertion 
by the insertion bundles of the risorius and triangularis. The three heads of the 
quadratus labii superior, in part covered by the orbicularis ring, form a con- 
tinuous muscle. The coarsely bundled orbicularis oculi is radiately extended 
at its upper lateral part. Noteworthy are the large parallel fibers which have 
lost their connection with the auricularis and course over the temple in the same 
direction as the latter. Finally, oblique fibers are directed toward the frontalis; 
father forward a transversely fibered extends toward the front under the in- 
sertion of the frontalis. All such thin-fibered sheets may belong to the auriculo- 
frontalis. 
