CAKNIYORA PELVIS AND PELVIC LIMB. 



11 



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

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

 sesamoid bone. 



PELVIS AND PELVIC LIMB. 



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 ischium 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, eqiiivalent to the linea as])era 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 fabeUce, 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 

 Avith 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. 



HE IV" 



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. Medius ; 

 I V, Annulus ; V. Minimus. 



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

 cuboid, and four cuneiforms, a superior one corresponding to tlie 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 



I 



