< AKXIVORA PELVIS AND PELVIC LIMP,. 



113 



phalanx lieing wanting ; it corresponds to the human pollex or thumb. Between 

 each metacarpal bone and its proximal phalanx we have anteriorly a very small 

 M-samoid bone. 



PELVIS AND PELVIC LIMR 



The pelvic cavity is generally long and narrow, but the ossa innominata are 

 very strong ; the iliac spines and crest present a continuous thick rounded 

 ridge. The i.?chium is also thick and strong, the ischiatic spine and tuberosity 

 becoming one tubercle. The cotyloid cavity is surrounded by a prominent 

 border, slightly notched within. 



The femur is straight and long, presenting a prominent neck, and a muscular 

 line posteriorly, equivalent to the linea aspera of man. The supracondyloid 

 fossa is represented by a small tubercle. Above each condyle is a small facet, 

 articulating with a sesamoid bone ; these two bones are called the fabellce, or 

 gastrocnemic sesamoids. 



The tibia and fibula are long, and united in the inferior half of their middle 

 by ligaments, at either extremity by articulation ; the fibula also articulates 

 with the astragalus, thus supplying the external malleolus to the tibia. There 

 is a small sesamoid bone at the external part of the head of the tibia. 



FIG. 32. 



A , Hand or Anterior Foot of the Dog ; B, That of the Hog ; C, That 

 of the Elk ; D, That of the Ox. I. Pollex ; II. Index ; III. Medina ; 

 IV. Annulus ; V. Minimus. 



The tarsus consists of 7 bones, as in the hog viz., the calcaneum, astragalus, 

 cuboid, and four cuneiforms, a superior one corresponding to the magnum of 

 the horse, and three in a row below it, the ecto, meso, and endo-cuneiforms. 

 The astralagus presents distally a distinct head, separated by a neck, which 

 articulates with the cuneiforme magnum. 



The metatarsal bones are 4 large and 1 rudimentary, the large ones each 

 teiminating in three phalanges, with their accessory sesamoids, as in the 

 anterior limb ; the fifth, or small rudimentary metatarsal, homologous with the 



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