40 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 Pyriformis is a small triangular muscle,, 

 under the posterior edge of the gluteus medius. It 

 arises from the ventral surface of the sacrum, and 

 is inserted on the great trochanter of the femur. 

 (Plate III.) 



8. The Gluteus Minimus lies directly under and 

 anterior to the pyriformis. Its origin is on the 

 ilium, just posterior to the origin of the gluteus 

 medius and also on the anterior part of the ischi- 

 um. It is inserted on the great trochanter, 

 (Plate III.) 



9. 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.) 



10. The Gracilis is a broad, thin muscle, cover- 

 ing the greater part of the inner side of the thigh. 

 It arises below the symphysis pubis, and is inserted 

 by fascia on the inner side of the tibia, partially 

 beneath the insertion of the sartorius. (Plate IV.) 



