184 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
MEASUREMENTS. 
No. 
15 , 252 . 
Upper dentition, length. . . . .268 
I—, length (i. e. ant. -post, diam.) . . .016 
“ width (i. e. transv. diam.) . . .031 
I-, length 017 
“ width 0165 
I-, length 015 
“ width 0073 
Upper canine, length 017 
“ width .... .0083 
Upper cheek-teeth series, length . . .182* 
“ premolar series, length . . .0825* 
P 1 , length 017 
“ width 0125 
P- 2 , length 018 
“ width ...... .016 
P-, length 019 
“ width 018 
P-, length 027* 
“ width 029* 
Upper molar series, length . . . .108 
M 1 , length 036 
“ width ...... .028 
M-, length ...... .046 
“ width 029 
M-, length ...... .038 
“ width 0235 
No. 
15,492. 
Lower dentition, length. 
I T , length 
“ width 
I2, length 
“ width 
I5, length 023 
1^, width ...... .014 
Lower canine, length .... 
“ “ width .... 
No. No. No. No. No. 
15,135 . 
15,000. 
15,336. 
15,969. 
15,256. 
?.25o 
.272 
.296 
.279 
.275 
•0175 
.017 
.021 
.018 
.028 
.029 
.0285 
.025 
.016 
•0155 
.019 
•0235 
.020 
.015 
.016 
.020 
.026 
.025 
.014 
.015 
.015 
•0135 
•OO95 
.0105 
.010 
.Oil 
.017 
.017 
.015 
.009 
.0125 
.012 
.179 
.190 
.191 
.191 
.082 
.082 
.080 
.080 
.015 
.0165 
.0155 
.015 
.0125 
.013 
.014 
.019 
.018 
.022 
.020 
.021 
.0195 
.019 
.0205 
.020 
.024 
.025 
•0235 
.022 
.025 
.021 
.0215 
.022 
.022 
.023 
.027 
.027 
.023 
.024 
.0245 
•025 
.024 
.026 
.024 
.024 
.032 
•034 
.104 
.112 
.104 
.118 
.119 
.031 
.036 
.030 
.032 
.031 
.025 
.027 
.029 
.036 
•037 
.042 
•045 
•045 
.040 
.04I 
.026 
.027 
•033 
.042 
•045 
.038 
.046 
.040 
.060 
.060 
.021 
.023 
.028 
.038 
.046 
No. 
15,487. 
.262 
•255 
.262 
.251 
.269 
.014 
.012 
.012 
.013 
.015 
.015 
.017 
.017 
.013 
.Oil 
.013 
.012 
.010 
.013 
.0215 
.020 
.021 
.OI4 
.028 
.025 
.028 
.026 
.021 
.019 
.012 
.016 
.016 
.OI4 
.020 
.018 
.017 
.OO85 
.009 
.010 
* Dp 4 - still in place. 
