1896.] 



ANATOMY or PETROSALE XANTHOPTTS. 



•703 



the head of the fibula. There is the usual insertion into the upper 

 part of the inner border of the tibia. 



The Motator Jibidce liea deep to the last, with which it is partially- 

 blended ; it rises from the posterior surface of the tibia in its upper 

 part, and is inserted into rather less of the back of the fibula. Its 

 fibres run obliquely upwards and outwards. 



Muscles of the Sole. — There is no muscular _^«a'0)' brevis digitorum 

 • or accesorius. The intrinsic muscles form three layers, the first of 



Muaelos of the Sole of Petrogale. 

 Abdr. Abductor minimi digiti. I Fl.B. Flexorea breves. 

 Addr. Adductor do. | 



which consists of one adductor, which rises from the third meta- 

 tarsal bone and runs to the proximal phalanx of the lifth toe. The 



