

727 



4679. The ossa innominata and bones of the lower extremities. 



The fabellse are not preserved. 



The following, to No. 4686 inclusive, are parts of the same skeleton of a young Cebus: 



Hunterian. 



4680. The skull. 



The deciduous molars and the first and second true molars are in place. The germs of the 

 three premolars are exposed on the right side of both upper and lower jaws. 



468 1. The vertebrae of the trunk. 



The vertebral formula is : 7 cervical, 14 dorsal, 6 lumbar, 3 sacral, and 24 caudal. Nine 

 pairs of ribs directly join the sternum, which consists of seven bones. The haemal arches 

 begin to be developed at the interspace of the third and fourth caudal vertebrae. Rudimental 

 haeraapophyses are articulated to the hypapophyses of the eighth anterior caudal vertebrae, 

 and these latter processes alone are present at the lower part of the centrum of the succeeding 

 caudals. 



4682. The right humerus. 



The proximal epiphysis is uuanchylosed, and the inner eondyle is perforated. 



4683. The bones of the right fore-arm and hand. 



The distal epiphyses of both radius and ulna are unauchylosed. The scaphoid is divided, 

 and there is a supernumerary sesamoid ossicle wedged between its inner division and the 

 trapezium. 



4684. The right femur. 



The epiphyses are still unanchylosed at both extremities. The fabellse are preserved 

 behind the condyles. 



4685. The right tibia and patella. 



The epiphyses are distinct at both extremities. 



4686. The right fibula and bones of the hind foot. 



A sesamoid is wedged between the entocuneiform and metatarsal of the hallux. A pair of 

 sesamoids are developed beneath the proximal joints of each of the digits, and a single sesamoid 

 beneath the last joint of the hallux. 





