SCOTT : LITOPTERNA OF THE SANTA CRUZ BEDS. 75 



No. 



Type. No, 2^. No. 25. 92^^. 



P-5-, length 009 .011 .0095 .0105 



" width oio .014 .0145 .013 



PA, length oio .011 .0115 .oil 



" width 013 .0145 .016 .015 



Upper molar series, length ...... .036 .033 .035 



Ml, length 010 .0125 .Oil .011 



" width 016 .016 .017 .017 



M^, length 014 .013 .013 .0125 



" width 017 .017 .017 .018 



M 3, length 012 .012 .010 .0115 



" width 015 .017 .018 .017 



No. 



No. 2^. No. 26. 15,^22. 



I^, antero-posterior diameter . . . . . . . .006 .007 



" transverse diameter ........ .004 .004 



Lower premolar-molar series, length ..... .079 .073 .080 



" premolar series, length . ...... .040 .036 .041 



P3-, length .007 .0065 .009 



" width .003 .004 .004 



Pj, length .......... .0105 .011 .011 



" width -0055 .0065 .0055 



Pg^, length .012 .011 .012 



" width .......... .008 .008 .009 



P^, length ~ .011 .011 .0115 



" width .......... .009 .010 .0105 



Lower molar series, length ....... .039 .037 .039 



M^, length . .011 .0105 .011 



" width .......... .009 .010 .010 



M^^, length .012 .on .012 



" width .009 .010 .010 



M^, length .014 .013 .016 



" width .....'..... .009 .009 .0095 



Quite a notable difference may be observed between Nos. 23 and 25 

 in regard to the proportions of the premolars, which are considerably 

 shorter and broader in the latter. 



In the succeeding table all of the measurements are taken from No. 



9245- 



