THE EAR. 419 
(6) The following three muscles connect the scutiform 
cartilage with other parts of the external ear. 
M. rotator auris or scutuloauricularis inferior.—A flat 
craniocaudal band of fibres lying between the auricle and the 
temporal muscle. 
Origin on the scutiform cartilage, 
just caudad of the insertion of the 
frontoscutularis, of which this muscle 
seems to be a continuation. The 
muscle passes caudad as a band seven 
or eight millimeters wide, curving 
about the medial surface of the auri- 
cle, and is inserted on the caudo- 
medial surface of the eminentia 
conche. 
Relations.—Lateral surface with 
the auricular cartilage; medial surface 
with the temporal muscle. 
Action.—Rotates the external ear 
mediad and caudad. 
M. adductor auris superior (Fig. 
169, 1; Fig. 63, 7). (Part of the 
auricularis anterior of man.) 
Origiz on the dorsal surface of 
the scutiform cartilage for its entire 
length. The fibres form a continua- Fic. 169.—CarTILAcE OF THE 
tion of those of the frontoscutularis; EXTPRNAL Bar, wit Mus- 
they pass dorsocaudad and are 7z-  a-i, as in Fig. 168. 1, M. 
serted into the spina helicis or cranio- ic eee 
medial margin of the auricular carti- 3, M. helicis; 4, M. tragicus later- 
lage. This muscle lies in the fold ae ee eee ae 
of skin that connects the craniomedial adductor auris inferior (cut); 8, 
3 ‘ -,1, M. depressor conchz (cut); 9, M. 
angle of the auricular cartilage with conchzeus externus; 10, part of 
the head, so that it is covered on both M. auricularis externus; tr, M. 
7 4 abductor auris longus (cut). 
sides by integument. 
Actton.—Draws the auricle craniad. 
M. adductor auris medius (Fig. 169, 2). (Part of the 
