44 



PATAGONIAN EXPEDITIONS: PALiEONTOLOGY. 





No. 



No. 



No. 



No. 



No. 



No. 





33- 



34- 



36. 



39- 



gzyi. 



15309- 



P^, width 





.006 





.007 







P^, length 





.016 





.015 







" width 





.011 





.011 







P^-, length 





.014 



.014 



.014 





.014 



" width 





.013 



.013 



.013 





.013 



Lower molar series, length 





.048 



.047 



.050 





.051 



My, length 





.014 



.0145 



.015 





.0145 



" width .... 





.012 



.014 



.014 





.014 



M^, length .... 





.015 



.015 



.0165 





.0165 



" width .... 





.013 



.014 



.014 





.0145 



M3, length .... 





.017 



■017s 



.0185 





.020 



" width .... 





.0115 



.0115 



.013 





.0125 



Mandible, depth below nig 













■033 



" pj 













.023 



It may be well to add here the measurements of the supposed L. inter- 

 niissmn Amegh., which I believe should be referred to this species ; they 

 are taken from casts of the type. 







Measurements. 







Upper premolar-molar series, length 



.086 



Lower premolar series, length 



.048 



" premolar series, length 



.050 



Pp length . 





.010 



pi, length («'. e., ant.-post. diam.) . 



.010 



" width . 





.004^ 



" width (i. e., transverse diameter) 



.007 



P2, length . 





.012 



P^, length 



.0113 



" width . 





.005 



" width .... 





.012 



Pg-, length . 





.014 



P^, length . 





.0125 



" width . 





.0085 



" width . 





.018 



P^, length . 





.014 



Upper molar series, length 





.038 



" width . 





.012 



Ml, length . 





.019 



Lower molar series, length 



.044 



" width . 





.036 



M J-, length . 





•013 



M^, length . 





.013 



" width . 





.0115 



" width . 





.021 



Mj, length . 





.013 



M-^, length . 





.012 



" width . 





.012 



" width . 





.020 



M^, length . 





.017 



Ig^, greater diameter 





.008 



" width . 





.0105 



" lesser diameter 





.0045 



Mandible, depth 



below mg^ 



•033 



Lower premolar-molar series, 



length 



.092 



it n 



" Pi 



.024 



It is made plain by the measurements that this individual is somewhat 

 smaller than most examples of L. floweri, but not sufficiently so to require 

 its separation as a distinct species, and the teeth are all so abraded that 



