88 



9. M. pectinceus passes over lesser trochanter, and weighs . f oz. 



10. M. gluteus maximus (b, Fig. 14) weighs 3 J oz. 



Origin, from last sacral vertebrae. 



Insertion, into glutseal trochanteric ridge, for 1\ inches. 



11. M. glutceus medius (d, Fig. 14) weighs 14 j oz. 



These glutcei divide the interval from the first candal vertebra to the 



crest of the ilium, equally. 



12. M. glutceus minimus (e, Fig. 14) weighs 2 J oz. 



Origin, from the dorsum of the ilium. 



Insertion, at inner side of great trochanter. 



13. M. tensor vagince femoris* weighs 6 J oz. 



14. M. sartorius weighs llf oz. 



15. M. rectus femoris (b, Fig. 14), weighs 11 oz. 



16. MM. vasti et crurceus, 32 oz. 



17. M. psoas parvus, 2-| oz. 



18. M. Psoadiliacus, 10J oz. 



19. M. quadratus femoris, . . 1*58 oz. 



Origin, from tuber ischii. 



Insertion, into posterior intertrochanter ridge. 

 This muscle acts in the plane of the knee joint. 



20. M. iliocapsularis (a, Fig. 14), weighs 0*53 oz. 



Origin, from ilium, behind the origin of rectus femoris. 



Insertion, into the front of the femur, on the line below the great 



trochanter. 



21. M. pgr if or mis weighs 2 J oz. 



22. M. obturator externus weighs 2*60 oz. 



23. M. obturator internus weighs . . 4 oz. 



It has been well observed by Cuvier, that man is remarkably dis- 

 tinguished from the Quadrumans, by the preponderance of the glutceus 

 maximus over the other glutcei. This is essentially a bipedal character- 

 istic, as is shown in the following comparative Tables : — 



Comparison of Glutceal Muscles in Man. 



Man. 



1. Gluteus maximus, .53 



2. Glutseus medius, 34 



3. Glutseus minimus, .13 



109 parts. 



Comparison of Glutceal Muscles in the Macaque, the Lion, and the Ostrich. 



. Macaque. Lion. Ostrich. 



1. Glutseus maximus, Agitator caudae, and Tensor vagina, 



combined, 



2. Glutseus medius, 



3. Glutseus minimus, 



28 



49 



76 



61 



43 



21 



11 



8 



3 



100 



100 



100 



* The tensor vagina and sartorius, when acting in conjunction to flex the thigh, 

 give a resultant in the plaae of the knee joint. 



