. On the anatomy of vertebrates [electronic resource] . Pelvis of the Hare, anterior view. 380 ANATOMY OF VERTEBRATES. In the prolific Guinea-Pig, the pelvis, fig. 245, is long andlaterally compressed, the passage being much narrower than thediameter of the head of the mature foetus. Prior to parturi-tion the symphysial ligaments become soft and extensile, and theinnominata, gliding on the saero-iliac joints, diverge at the sym-physis to the extent shown in fig. 246 during parturition. Afterthis process the symphysis quickly returns to its former or normal 245 246. Pelvis of the Guinea-Pig sev
. On the anatomy of vertebrates [electronic resource] . Pelvis of the Hare, anterior view. 380 ANATOMY OF VERTEBRATES. In the prolific Guinea-Pig, the pelvis, fig. 245, is long andlaterally compressed, the passage being much narrower than thediameter of the head of the mature foetus. Prior to parturi-tion the symphysial ligaments become soft and extensile, and theinnominata, gliding on the saero-iliac joints, diverge at the sym-physis to the extent shown in fig. 246 during parturition. Afterthis process the symphysis quickly returns to its former or normal 245 246. Pelvis of the Guinea-Pig seventy-two hours Pelvis of the Guinea-Pig at the time of after parturition. parturition. state, and in a few days presents only a little thickness andmobility. The young of the Guinea-Pig are far advanced atbirth, some of the deciduous teeth are shed in utero, and theyrun about and begin to eat soon after they see the light. In the Water-Hog, or Capybara, there is no complete acromion is long and slender, and bifid at its extremity, withthe longer division directed downward. The humerus is widelyperforated between the condyles, but not above the inner condyle:both this bone and the ulna are solid. The scaphoides and lunareare connate. The pollex is wanting in the fore feet, and boththe hallux and the fifth toe are wanting on the hind feet. Theungual phalanges are short, obtuse, and broad. SKELETON OE RODENT!A. 381 The Beaver, fig. 230, is a member of that great division of theRodentia in which the clavicles are complete : the acromion scapula)ben
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