ANATOMICAL STEUCTUEE OF ANTHEOPOID APES. 151 



like those of men, except in a few unimportant parti- 

 culars (comp. Figs. 48 and 50). I have not observed 

 in anthropoids the muscular fibres which in man 

 branch out from the orbicular muscle of the eye, 

 and overlap the cheeks and temples, and which are 

 considerably developed in the head of a Monjalo 

 negro which was dissected by me (Fig. 49, 3, s'" In 



1716 



Fig. 48. — Muscles of the head and face of a European. 1, 1', Occipito-frontalis. 

 2, 3, Orbicularis palpebrarum, 4, Pyramidalis nasi. 5, Levator labii superioris 

 alteque nasi. 6, Compressor naris. 7, Levator labii superioris. 7', Zygomaticua 

 minor. 8, Levator angull oris. 8', Zygomaticus major. 9, Orbicularis oris. 

 9', Levator menti. 9", Depressor labii inferioris. 10, Depressor anguli oris. 

 11, Masseter. 12, 13, Rieoriua and the buccinator by which it is covered. 

 15, Trapezius. 16, Attrahens. IV, 19, Attollens. 20, Retrahens aurem. 21, 

 Sterno-mastoid. 22, Splenius. A. Tendinous aponeurosis. C. Malar bone (the 

 parotis is removed). F. Skin of neck. 



apes that portion of the orbicular muscle which 

 covers the supra-orbital ridge is very marked, 

 There is generally a considerable layer of muscle 

 on the nose and upper lip. I have dissected it in 

 detail in anthropoid and other apes, including those 



