146 



PATAGONIAN EXPEDITIONS: PALEONTOLOGY. 



Pl, width 



Upper molar series, length 



Ml length 



" width 

 M^, length 



" width 

 M^, length 



" width 

 It. length 

 I- " 



I- " 



Lower canine, length 

 Pj-, length 



P- " 



No. 



No. 



No. 



No. 



15,216. 



I. 



2. 



16,003. 

 .022 

 .060 





.0215 





.020 

 .023 





.0234 



.024 



.0205 

 •023s 

 .020 

 .022 



019 



020 



P^J, " 0225 



Lower molar series, length ..... .066 



My, length .022 



M 

 M- 



•023 

 .0215 



.014 

 .0145 



.DISS 



.0167 



.0198 



.0214 



.022 



.0226 



.0226 



•023 



.0226 



■017s 

 .020 



.025 

 .024 



The measurements of the milk-teeth and associated molars are 

 from two individuals, those of the upper jaw from No. 15,359 and 

 of the lower jaw from No. 16,002. 



Di^, length 



" width 

 Di-3-, length 



" width 

 Ds, length 



" width 



Upper milk-premolar series, length 

 Dpi, length 



" width . 

 Dp2, " 

 Dp^, length 

 Dpi, " 



Upper molar series, length 

 Ml, length 



" width 

 M^, length 



" width 

 M-3-, length 



" width 

 Lower milk-dentition, length 



.0093 



.0043 



.010 



.005 



.0115 



•0055 



.068 



.012 



.007 



.011 



.017 



.019 



.062 



.021 



.020 



.022 



.021 



.018 



.018 



.III 



Diy, length . 



" width . 

 Dig, length . 



" width . 

 Dij, length . 



" width . 

 Dj, length . 



" width . 

 Lower milk-premolar series, length, 

 Dpi, length 



" width . 

 Dpg-, length . 



" width . 

 Dpj, length . 



" width . 

 Dpj, length . 



" width . 

 My, length . 



" width . 



taken 

 those 



.008 



.004 



.0115 



.005 



.0125 



.005 



.014 



•00s 5 



.061 



.016 



.006 



.020 



.008 



•023s 



.009 



.025 



.013 



.022 



.014 



