Douglass : Procamelus from Upper Miocene of Montana. 163 



Mm. 



Lengtii of space between P' and P^ I9 



< ( < ( p 2 I c 



Width of P? 8 



Length of Pi 18 



Width of Pi* II 



Length of P* 20 



Width of PA 17 



Length of Ml and M^ 48 



" '< M3 38 



Width of M-3 25 



Length of lower dental series 267 



" " " molar-premolar series I7S 



" " " molar series 96 



" " If greatest 12 



Width of ly 9-5 



Length of I3 15 



Width " Ij 8 



Length of space between I3 and canine il 



" " canine 19 



Width " " 13 



Length of space between canine and Py 20 



" " Py 155 



Width of Py II. 5 



Length of space between Py and P.j 20 



'< " P^ 12 



Width of Pj 7-5 



Length of P3 16.5 



Width of F^ 7 



Lengthof M^ 43 



Width of Mj 19 



Length of atlas, greatest loi 



Width of atlas 120 



Length of centrum of axis including odontoid process 190 



Width of axis, posterior 84 



Height of axis, greatest 1 00 



Length of C 3, centrum 176 



" " C3 118 



Height of C 3 77 



Length of C4 ^71 



Width of C 4 no 



Length of C 5 161 



Width of C 5, about 105 



Height of C 5 82.5 



Length of C 6, about ••• 140 



" " C7 97 



Whole length of neck articulated 1000 



