ANATOMICAL STRUCTURE OF ANTHROPOID APES. 153 



levator labii snperioris aloeqiie nasi was very wide 

 (Figs. 50, 6). lu the case of a gorilla, Ehlers dis- 

 sected the small zygomatic muscle, together with 

 the levator labii superioris alseque nasi, in the 

 manner introduced by Henle as a siugle square 

 muscle of the upper lip {Museulus quadratus lahii 

 superioris). In the gorilla I observed a levator 

 alaeque nasi, together with the already mentioned 



Fig. 50. — Head-muscles of gorilla presented in Fig. 3. 1, '2, Occipito-frontalis. 

 3, 3', Orbicularis palpebrarum. 4, I'yramidalis nasi. 5, Levator alee nasi. 6, 

 Levator labii superioris alwque nasi. 7, Zygomaticus minor. T, Levator 

 anguli oris. 8, Zygomaticus major. 9, 9', Orbicularis oris. 10, Risorius. 

 11, 16, Masseter. 1', Buccinator. 12, Depressor anguli oris. 13, Buccinator. 

 14, Platysma. 15, Trapezius. \1, Temporal. 18, 19, 20, Attrahens, attoUens, 

 and retrahens aureni. 21, Lesser muscle of helix. A, Tendinous aponeurosis. 

 B, Cartilage of nostril. C, Zygoma. D, External ear. *, Stensoniaa duct. 



levator labii superioris ; but I failed to find any 

 separate levator labii superioris. The very wide 

 cartilage of the nose is occupied by a considerable 

 amount of muscular tissue. All these muscles are 



