MEASUREMENTS. 149 



gest digit, a length of 54 inches (1040 ram.). The scapula has a 

 length of 16J inches (420 mm.), and the innominate bones a 

 length of 13 inches (330 mm.). The measurements more in de- 

 tail of the principal bones, taken from the skeleton as mounted, 

 are as follows : 



Measurements of an adult male skeleton of Odobwnus olesus. 



mm. 



Total length of skeleton 2890 



Total length of skull 390 



Extreme breadth of skull 305 



Length of canines (from plane of molars) 559 



Length of lower jaw 290 



Breadth at condyles ,... 238 



Length of cervical series of vertebrae * 400 



Length of dorsal series of vertebrae 1170 



Length of lumbar series of vertebrae 380 



Length of the sacral and caudal series of vertebrae 550 



Length of first rib, osseous portion 150 



Length of first rib, cartilaginous portion 95 



Length of first rib, total 245 



Length of second rib, osseous portion 240 



Length of second rib, cartilaginous portion 160 



Length of second rib, total 400 



Length of third rib, osseous portion 310 



Length of third rib, cartilaginous portion 180 



Length of third rib, total 590 



Length of fourth rib, osseous portion 440 



Length of fourth rib, cartilaginous portion . 190 



Length of fourth rib, total 630 



Length of fifth rib, osseous portion 480 



Length of fifth rib, cartilaginous portion 220 



Length of fifth rib, total 700 



Length of sixth rib, osseous portion 565 



Length of sixth rib, cartilaginous portion 255 



Length of sixth rib, total 820 



Length of seventh rib, osseous portion 575 



Length of seventh rib, cartilaginous portion 285 



Length of seventh rib, total 860 



Length of eighth rib, osseous portion 580 



Length of eighth rib, cartilaginous portion 275 



Length of eighth rib, total 855 



Length of ninth rib, osseous portion 570 



Length of ninth rib, cartilaginous portion 345 



Length of ninth rib, total 915 



Length of tenth rib, osseous portion 560 



Length of tenth lib, cartilaginous portion 400 



Length of tenth rib, total 960 



Length of eleventh rib, osseous portion 525 



Length of eleventh rib, cartilaginous portion 380 



Length of eleventh rib, total , 905 



