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ear. All the deeper muscles of the Panniculus Carnosus 

 are quite large, and easily to be seen when the great su- 

 perficial covering of the animal is removed. On the hind- 

 leg there is a muscle, which, from its similarity to the M. 

 Dermo Flexor Antebrachii, both in its origin and inser- 

 tion, I have considered as a skin muscle. It is described 

 by Mivart as a M. Gluteus Maximus. I have called it 

 the Dermo Flexor Cruris. 



M. Dermo Flexor Cruris, 



This is quite a large, broad, and elongated muscle, which 

 arises from the aponeurosis, connected with the sacral and 

 last coccygeal vertebrae. Its posterior margin is uni- 

 ted with the under surface of the Panniculus Carnosus. 

 The muscle passes downward, narrows and thickens, and 

 ends in a broad, flat tendon, which is inserted into the 

 lower part of the posterior surface of the tibia, on the 

 peroneal aspect, and also into the anterior portion of the 

 same, where it blends more or less with the Tibialis An- 

 ticus, and other muscles of the leg. 



The similarity of this insertion to that of the Dermo 

 Flexor Antebrachii into the ulna, is very marked. In a 

 part of the origin, too, it resembles the cutaneous muscle 

 of the fore-leg, since both arise from the Panniculus ; the 

 one wholly, the other in part. The muscle which Mivart 

 calls the Gluteus Medius, I think may be better known 

 as the Gluteus Maximus. He even indicates that this 

 muscle, the Gluteus Medius, may be a part of the muscle 

 which he calls the Gluteus Maximus, and which I consider 

 a cutaneous muscle and name the Dermo Flexor Cruris. 

 It certainly has many resemblances to the Gluteus Maxi- 

 mus, and if I am right in my interpretation of the muscle 

 which lies partly above it, the Dermo Flexor Cruris, is 

 the homologue of the Gluteus Maximus. If, as Mivart 



