448 Wortman — Studies of Eocene Mammalia, etc. 



Anteroposterior diameter of third molar 3* mrn 



Transverse diameter of fourth premolar 5 



Transverse diameter of first molar _,.. 7 



Transverse diameter of second molar 9 



Transverse diameter of third molar 8 



Length of inferior molar and premolar series, from 



posterior base of canine _ _ 66 



Length of inferior molars _ 24 



Antero-posterior diameter of first molar crown 7 



Antero-posterior diameter of second molar (not type).. 9 



Antero-posterior diameter of third molar (not type) 8 



Length of manus 74 



Length of humerus 113 



Length of third metacarpal 32 



Length of first phalanx, third digit ]6 



Length of second phalanx, third digit ] 



Length of claw, third digit . _ 9 



Length of sacrum 49 



Transverse diameter of sacrum 27 



Length of pelvis (estimated) ,.. 128 



Measurements of the Church Ituttes Specimen. 



Total length of cranium 149 ,mm 



Length from incisive border to termination of palate . ~ 81* 



Length from posterior border of palate to condyles 68* 



Width of condyles 23 • 



Width of palate at and including second molars _ 40*5 



Width of palate between canines 12* 



Length from anterior border of orbit to condyle 94* 



Length from anterior border of orbit to incisive border 58 # 5 



Height of axis _ « 27* 



Length of humerus 115*5 



Length of tibia 118-5 



The type specimen was discovered by Professor Marsh, at 



Grizzly Buttes, and the cotype by R. Son, at Church Buttes, 

 Bridger Basin, Wyoming. 



[To be continued.] 



