4O DISSECTION OF THE CAT 



along the inner side of the biceps femoris, with 

 which muscle it finally fuses. (Plate III.) 



Reflect the preceding muscles. 



6. The Gluteus Medius is a thick muscle lying 

 directly under the gluteus maximus. It arises 

 from the outer surface of the ilium and the fascia, 

 between the gluteus maximus and tensor vaginae 

 femoris, and is inserted on the great trochanter of 

 the femur. (Plate III.) 



7. The Gluteus Minimus lies directly under the 

 gluteus medius. Its origin is on the ilium, just 

 posterior to the origin of the preceding muscle, 

 and also on the anterior part of the ischium. It is 

 inserted on the great trochanter. (Plate III.) 



8. The Quadratus Femoris is the small quadran- 

 gular muscle arising from the tuberosity of the 

 ischium. It is inserted on the posterior surface of 

 the femur, near the great trochanter. (Plate III.) 



9. The Semitendinosus is the smaller and more 

 external of the two posterior muscles of the thigh. 

 It arises from the tuberosity of the ischium, and is 

 inserted by fascia on the inner side of the tibia, 

 and by tendon on the front of the tibia, just below 

 the patella. (Plates II., III., and IV.) 



10. The Semimembranosus is the larger of the 

 two posterior muscles of the thigh. Its origin is 

 on the ischium, from the tuberosity to the sym- 

 physis pubis. It is inserted (i) on and above the 

 inner condyle of the femur, and (2) by a strong 



