324 DE. C. F. SONNTAG ON THE ANATOMY, 



Total length of pectoral extremity 25*7 inches 



Great trochanter to centre of patella 9*1 ,, 



Centre o£ patella to lower end of tibia 7'6 ,, 



Foot (sole 4*6 ins. : middle digit 2-8 ins.) 7*4 ,, 



Total length of pelvic extremit}'' 24*1 ,, 



Excess of pectoral over pelvic extremity 1 "6 „ 



The Muscular System. 



Muscles of the Head, JVeck, and BacTcj 



The platysma myoides (text-fig. 25) is much thicker than in 

 Man. It arises from the fascia over the pectoralis major and 

 deltoid, and the two muscles are inseparable in the middle line 

 of the neck. Its lateral parts are more muscular and thicker 

 than the medial portions. About an inch below the symphysis 

 menti the fibres of the mesial parts decussate (Ruge 42, Champ- 

 neys 11), and I observed the fibres of the left muscle lying super- 

 ficial to those of the right one ; but Quain describes the reverse 



Text-figure 25. 



ORB.OC.-., 



LEV.LAB.SUP 



Superficial muscles of the face. ORB.OC : orbicularis oculi ; ORB.ORIS : 

 orbicularis oris. Other letters in text. 



condition in Man. The fibres are attached to the lower border 

 of the mandible, the skin of the lips, and the muscles of the lips 

 and angles of the mouth. But no fibres are attached to the 

 zygoma as described by Champneys. In the face it separates 

 into upper and lower bundles of fibres ; the former, corresponding 

 to the risorius in Man, runs to the muscles at the angle of the 

 mouth ; and the latter, which is much larger, blends with the 

 skin and muscles of the lower lip. Small fibres, running from 

 the platysma to the angle of the mouth, correspond to the 

 triangularis muscle [tri.). 



