340 



THE VERTEBRATE SKELETON. 



FIG. 65. PELVIC GIKDLE AND SACRUM OF 



A. CASSOWARY (Casuarius galeatus) x . 



B. OWEN'S APTERYX (A. oweni)x%. 



C. BROAD BILLED RHEA (B. macrorhyncha) x . 



D. OSTRICH (Struthio camelus) x T V. (All Camb. Mus.) 



1. ilium. 



2. ischium. 



3. pubis. 



4. acetabulum. 



5. pectineal process. 



