PRACTICAL DIRECTIONS. 435 
3. The corrugator supercilii medialis (Fig. 63, 4). 
4. The orbicularis oculi (Fig. 63, c; Fig. 64, s). 
5. The corrugator supercilii lateralis (Fig. 64, 4). 
6. Notice the frontoauricularis if it exists. 
7. The levator auris longus (Fig. 63, g, g'). Transect and 
8. The auricularis superior (Fig. 63, 4). Transect. 
g. The abductor auris longus (Fig. 63, m). Transect. 
10, The abductor auris brevis (Fig. 63, 7). Transect. 
11. The epicranius (Fig, 63, 4,4’). In dissecting this muscle 
the intermedius scutulorum and corrugator supercilii medialis may 
be cut by an incision parallel to the middle line but a short distance 
to one side of it. 
12. The zygomaticus (Fig. 64, d). This and the two following 
muscles may usually be best seen running beneath the fibres of the 
platysma, without reflecting the latter. If necessary, however, the 
platysma may be transected and reflected, though this can be done 
only with great difficulty. 
13. The submentalis (Fig. 64, c). 
14. The depressor conchee (Fig. 64, 4). 
The zygomaticus, submentalis, and depressor conchz should 
now be transected one or two centimeters from the external ear. 
The corrugatores supercilii lateralis and medialis may be cut across 
between the eye and the ear, and reflected. There is thus exposed: 
15. The frontoscutularis. Transect near the scutiform cartilage. 
16. The adductor auris inferior (Fig. 64, 0). Transect near its 
insertion. 
The external ear is now attached to the head only by the external 
auditory meatus and the tragicus lateralis muscle. Read the descrip- 
tion of the latter (p. 418, and Fig. 67, a), find it beneath the fat 
which surrounds the proximal portion of the external ear, and cut it 
as far ventrad as possible. Now cut across the cartilaginous auditory 
meatus as near to the tympanic bone as possible, and remove the 
external ear, preserving it for future study. (The remainder of the 
muscles of the external ear may be studied in connection with the 
study of the auditory organ.) 
17. The orbicularis oris (p. 105 and Fig. 64, z). 
18. The zygomaticus minor, if it exists (p. 105, and Fig. 64, e). 
19. The quadratus labii superioris (p. 105). 
a, The levator labii superioris proprius (Fig. 64, /). 
&. The levator labii superioris alaeque nasi (Fig. 64, g). 
20. The caninus (p. 106, and Fig. 64, 7’). 
21. The buccinator (p. 106). 
22. The myrtiformis (p. 106, and Fig. 64, 4). 
23. The ‘‘ moustachier’’ (p. 107). 
24, The quadratus labii inferioris (p. 107). 
