130 KANGAROOS CHAP. 
lagus the family is terrestrial, and its numerous — species 
progress by leaps effected by the long hind-limbs, which are 
ase cba 
Fic. 65.—Skeleton of Wallaby (Macropus uwalabatus). 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. acef, Acetabulum ; acr, 
acromion process; ast, astragalus; cal, caleaneum ; chd, cuboid ; chev, chevron- 
bones ; cl, clavicle ; cum, cuneiform of carpus ; epi, epipubis; 7, fibula; fem, 
femur ; Ad, head of femur ; hu, humerus ; 7/, ilium ; isch, ischium ; obt, obturator- 
foramen ; orb, orbit ; pis, pisiform ; pub, pubis; rad, radius ; rb}, first rib; 7b), 
last rib; sc, scapula ; st, sternum ; #6, tibia ; ¢roch, great trochanter of femur ; 2/n, 
ulna; wne, unciform; ZV, fourth toe. (From Parker and Haswell’s Zoology.) 
decidedly, often greatly, longer than the fore-limbs. In the 
hind-lmb 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 
