THE MUSCLES OF THE HEAD. 99 
Action.—Pulls the angle of the eye caudad; at the same 
time pulls the external ear craniad. 
M. frontoauricularis.—A few of the fibres which are 
attached along the upper eyelid sometimes pass dorsocaudad, 
mingled with fibres of the corrugatores supercilii medialis and 
lateralis and the frontoscutularis, to the craniomedial angle of 
the auricular cartilage, where they unite with the fibres of the 
adductor auris superior. These fibres are sometimes distin- 
guished as the frontoauricularis muscle. 
M. levator auris longus (Fig. 63, g and g’). (Part of the 
auricularis posterior of man.)—This lies on the caudal half of 
the dorsal surface of the head, forming a laterocaudal continua- 
tion of the intermedius scutulorum (a). 
Origin from the middle line of the neck dorsad of the atlas, 
and from the sagittal crest for about one centimeter craniad of 
the external occipital tubercle. The fibres form a broad thin 
sheet which passes craniolaterad as far as the caudal end of the 
scutiform cartilage (1). Here the muscle divides; the major 
portion is attached to the scutiform cartilage (1), its fibres 
intermingling with those of the intermedius scutulorum (a). 
The caudal portion of the muscle (g’) passes onto the surface 
of the auricle, extending one or two centimeters distad; -here 
it is inserted on an oblique line which lies directly craniad of 
the insertion of the transversus auricule (7). 
The caudal portion of this muscle (g’) having origin above 
the atlas and insertion on the auricle, is sometimes considered 
a separate muscle, the supercervicoauricular or cervicoauric- 
ular. The cranial portion (g) with origin on the sagittal crest 
and insertion on the scutiform cartilage might be distinguished 
as the occipitoscutularis. 
The levator auris longus is continuous at its cranial end 
medially with M. epicranius (2); laterally with M. intermedius 
scutulorum (a). 
Relations. —Outer surface with the integument. Inner 
surface with the temporal muscle (x), the auricularis superior 
(2), the abductor longus auris (7), a narrow strand of the 
platysma, and the clavotrapezius. 
Action. —Pulls the external ear dorsocaudad. 
