1916] 



M < rriam-Stock-Moody : 



An American Pliocene Bear 



97 



Measurements of Dentition 



No. 22362 



C, upper, anteroposterior diameter at base of enamel a29.8mm. 



C, upper, transverse diameter at base of enamel 20.0 



C, upper, length of root, measured along posterior border 76.7 



C, lower, anteroposterior diameter at base of enamel 30.0 



C, lower, transverse diameter at base of enamel 0.21.3 



C, lower, length of root, measured along posterior border 73.8 



P-, anteroposterior diameter 12.4 



P 1 , transverse diameter 7.1 



No. 22362 No. 22362 Indarctos 



Left side Right side salmontanus 



Pi, anteroposterior diameter measured along 



outer side 31.7 mm. 31.0 



P^, width across deuteroeone 22.6 o20.9 



P 1 , anteroposterior diameter of protocone at 



base 14.1 13.0 



P 1 , anteroposterior diameter of protostj'le..-. 4.7 4.6 



M-, greatest anteroposterior diameter 35.3 35.2 35 (35.5*) 



M-, anterior end of tooth to posterior end 



of paraeone 13.8 14.0 14.8* 



M-, posterior end of paraeone to posterior 



end of tooth 21.5 21.2 20.9* 



M-, anterior end of tooth to middle of meta- 



cone 17.8 17.5 19.8* 



M-, middle of metacone to posterior end of 



tooth 17.5 17.6 15.7* 



M-, width of tooth across paraeone 26.8 27.2 27.0 



M-, width of tooth across metacone 24.6 24.0 25.2* 



M-. anterior side of hypocone to posterior 



end of tooth 17.6 15.6 15.4* 



Length of M- compared with width of MX. 1.31% 1.29% 1.29% 



M;, anteroposterior diameter 32.0 mm. 30.4 



M5, anteroposterior diameter of trigonid 15.8 14.9 

 Mg, anteroposterior diameter of func- 

 tional talonid region 16.2 15.5 



M*, transverse diameter across talonid— .a21.3 18.4 

 a, approximate. 



* Measurements taken on Pilgrim's figure of M-. 



A. simum Hyaenarctos Hvaenarctos ? 



No. 22362 No. 3004 punjabiensis ? palaeindicus 



30.5 30.0 



19.0 16.5 



1 1 .5 

 19.3 



13.5 

 19.2 



SKELETAL ELEMENTS 



The skeleton of no. 22362 is represented by the greater part of 

 the humerus, half of the ulna, a fifth metacarpal, the navicular and 

 cuboid, a second metatarsal, and several phalanges. 



The right humerus, the first element of the Pliocene bear to be 

 discovered, is nearly complete. A portion of the distal end had 

 rotted away, and a small part of the proximal end is missing. This 



