PLATE XXXVI. 



Fig. 1. — Synipbysis mandibuli of rintatherium rohustiim, from Henry's Fork, Wyo. ; .75 of natnral size; 

 1, from right side; la, from left; 1 6, from below. Page 5^9. 



Fig. 2. — Two last iiiolurs of left ruiniiK of the same iudividnal, .0 natural size. 



Figs. 3-8. — Teeth of f Vinlalherium laamtre, natural size ; fig. 3, first i)reniolar, exteinal view ; 3 (j, crowu, 

 from above ; 3 h, antero-jiosterior view. Page 591. 



Fig.s. 4, 5. — Posterior and median jireinolars, crowns, from above. 



Fig. 6. — Last premolar, from above ; 6 a, lateral view. 



Fig. 7. — First molar (broken), from above. 



Fig. 8. — Last molar (broken), from above ; 8 a, the same, posterior view. 



Fig. 9. — Fragment ot aca.\iu\!t,oi EohasUeus jrressicoDns, outer view ; 9 u, glenoid cavity, one-fourth natu- 

 ral size. Page 5G'2. 



Fig. 10. — Posterior superior molar of I'alceosyops raUldens Cope, from Mammoth Buttes, Wyoming. 

 Page 661. 



