PETERSON: THE AMERICAN DICERATHERES. 449 



Measurements of the Type of D. cooki. 



Greatest length of skull 350 mm. 



Length from occipital condyle to and including P- 307 



Length from occipital condyle to M^ 150 



Greatest transverse diameter of skull 215 



Greatest transverse diameter of brain-case 107 



Greatest transverse diameter of frontals 140 



Transverse diameter of nasals back of horn-cores 65 



Transverse diameter of nasals at the horn-cores 70 



Transverse diameter of palate at M' 55 



Vertical diameter of the orbit 30 



Antero-posterior diameter of premolars two, three, and four 68 



Antero-posterior diameter of the molar series 90 



Antero-posterior diameter of P- 22 



Transverse diameter of P- 23 



Antero-posterior diameter of P* 28 



Transverse diameter of P* 29 



Antero-posterior diameter of M' 34 



Transverse diameter of M' • 32 



Antero-posterior diameter of M^ 26 



Transverse diameter of M' 32 



Measurements of Limb Bones of Skeleton. ' 



Scapula, height 273 mm 



Scapula, width at superior border 138 



Humerus, length 250 



Ulna, length 315 



Radius, length 250 



Carjius, heiglit 59 



Carpus, transverse diameter 60 



Mc II, greatest length 70 



Me III, greatest length 138 



Mc IV, greatest length 115 



Phalanges, median digit 70 



Pelvis, total length 335 



Pelvis, diameter across ilia 355 



Pelvis, Diameter across acetabulum 220 



Femur, length 323 



Tibia, length _, 275 



Tarsus, height of tuber of calcaneum not included 70 



Tarsus, length of tuber of calcaneum 48 



Tarsus, greatest transverse diameter 53 



Mt. II, length 110 



Mt. Ill, length 125 



Mt. IV, length 110 



Phalanges, third digit 30 



