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EXPLANATION

OF

PLATE 15.

inferior end of right humerus

auricular cartilage

ear-opening

upper tendon of m. maxillo-labialis

tendinous plate, the coalesced upper tendons of right and left m. raaxillo-lab.

undermost tendon of m. maxillo-labialis

left fore-limb

Fig. 1. Head of Talpa, with the m. maxillo-labialis dissected out. Round the ear-opening and the eye a
little skin has been left. The right fore-limb has been exarticulated in the elbow-joint.

Fig. 2. Head of Greenland Dog, with the m. sphincter profundus dissected out. To the left is seen the
portio auricularis, then follows the portio intermedia, then the portio palpebralis, some of whose fascicles are
transversely interrupted; finally the portio oris, extending into the upper and lower lip. Of the other muscles
only the orbicularis oculi has been indicated.

Fig. 3. Head of Didelphijs, seen from above, with the ear-muscles dissected out. p. anterior, p. intermedia
etc. = pars anterior etc. musculi auriculo-occipitalis + postauricularis. scutularis a see the text p. 20.

Fig. 4. Diagram of the ear-muscles of the right side of the Placental Mammals. Most of the auricle has
been cut off. s scutellum. sphincter prof. = pars auricularis m. sphinct. prof.

Fig. 5. Muscles of the right ear of Canis lupus dissected off from the head and seen from the internal
side, s scutellum; the margin of this, as far as covered by muscles, is indicated by a dotted line, ta mus-
culus trago-anterus. — Comp. PI. 12.

Fig. 6. Head of Elk, seen from behind; the neck has been cut through near the head; the parts seen in
the section have only been indicated (a atlas, c carotis, e ligamentum nuchse, m medulla spin., o proc. odont.
epistrophei, oe oesophagus), the figure having the aim to show the relations of some of the ear-muscles.

Fig. 7. Right ear of the Elephant with its muscles dissected off from the head and seen from the internal
side. 1—fi m. scutularis, 3 pars transiens, t tendinous band. 5 m. rotator. 6 m. auriculo-occipitalis. 7 another
portion of the same, cut off near the insertion. 8 and 9 m. postauricularis, superficial part, cut off.
10 m. postauricularis, deep portion, most of it omitted. 11 m. adductor inf. 12 m. sphincter profundus, pars
auricularis. 13 m. temporo-auricularis. 15 m. transversus (15* see the text p. 46).