52 Annals of the Carnegie Museum. 



A fragment of a mandible (No. 408, Cam. Mus. Cat. Vert. Foss.) 

 of Amphicyon ? crucians Filhol from the Quercy formation of Europe, 

 with the molar series in place, shows close resemblance to the specimen 

 under consideration. In A. crucians M-g- is relatively smaller and the 

 anterior portion of the crown is more elevated than in A. superbus. 



Measurement. 



mm. 



Greatest length of skull 253 



Distance from occipital condyle to incisors 228 



Distance from occipital condyle to M 3 - 112 



Distance from M^ to and including the incisors 117 



Greatest transverse diameter of the skull 1 48 



Transverse diameter of occipital condyle 46 



Greatest transverse diameter of the brain case ' 58 



Transverse diameter of the frontals at paroccipital processes 68 



Transverse diameter of muzzle at canine 51 



Length of premolar series ,.. 55 



Length of molar series 34 



Antero-posterior diameter of canine at base 13 



Transverse diameter of canine at base 10 



Antero-posterior diameter of P- 1 - 6 



Transverse diameter of Pi 5 



Antero-posterior diameter of P^ 11 



Transverse diameter of P^ 5 



Antero-posterior diameter of P- 3 - 13 



Transverse diameter of P^ 7 



Antero-posterior diameter of P^ 22 



Transverse diameter of P A , anteriorly 14 



Antero-posterior diameter of M- 1 - 19 



Transverse diameter of M- 1 -...; 24 



Antero-posterior diameter of M- 2 - 13 



Transverse diameter of M 2 18 



Antero-posterior diameter of M- 3 - 5 



Transverse diameter of M 3 - 8 



Greatest length of mandible 182 



Height of mandible at coronoid process 82 



Length of premolar series 47 



Length of molar series 46 



Antero-posterior diameter of canine at base 12 



Transverse diameter of canine at base 10 



Antero-posterior diameter of P T 6 



Transverse diameter of P T 4 



Antero- posterior diameter of P^ 10 



Transverse diameter of P^ 5 



Antero-posterior diameter of P3 13 



