130 



KANGAROOS 



lagus the family is terrestrial, and its numerous species 

 progress by leaps effected by the long hind -limbs, which are 



orb 



cbd 



FIG. 65. Skeleton of Wallaby ( Mao-opus ualabatus). The scapula is raised some- 

 what higher than in nature. The end of the tail is omitted. The head of 

 the femur has been separated from the acetabulum. acet, Acetabulum ; acr, 

 acromion process ; ast, astragalus ; cal, calcaneum ; cbd, cuboid ; chev, chevron- 

 bones ; cl, clavicle ; cun, cuneiform of carpus ; epi, epipubis ; fb, fibula ; fern, 

 femur ; hd, head of femur ; hu, humerus ; il, ilium ; isch, ischium ; obt, obturator- 

 foramen ; orb, orbit ; pis, pisiform ; pub, pubis ; rad, radius ; rb l , first rib ; r6 1:i , 

 last rib ; sc, scapula ; st, sternum ; tb, tibia ; troch, great trochanter of femur ; idn, 

 ulna ; unc, unciform; IV, fourth toe. (From Parker and Harwell's Zoology.) 



decidedly, often greatly, longer than the fore -limbs. In the 

 hind -limb the fourth toe is very long and strong; the fifth 

 moderately so ; the second and third are slender and united by 

 skin. The tail is always long, but differs in its characters from 



