PLATE LXVIIa. 



Mainuiali.a from tin' White River bed ot Colorodo. 



Fig. 1. — Left mandibular ramus of Bij(vn()don horndiis, external view; o, the same, from above; both 



three-fourths natural size. 

 Fig. "2. — Portion of left mandibular ramus of Amphicijon ottns, from above, natural size. Page 894. 

 Fig. 3. — Portion of right ramus of the mandible represented in fig. 2, external view, natural size. 

 Fig. 4. — Portion of left mandibular ramus of Jmphu-yon harishor-niaiius, from the inner side ; u, from 



above, natural size. Page 896. 

 Figs. .5,6. — Gahcijnus lippincoHianus. Natural size. Page 919. 

 Fig. .'i.— Portion of left mandibular ramus, external view ; ft, superior view. 

 Fig. t>. — Portion of right mandibular ramus, external view ; 6, from above. 

 Figs. 7-11. — Galevi/iius gregarius. The figures are of the natural size, and a represents the inner side, 



and b the superior view in each ease. Fig. 8 represents a ramus which is peculiar iu lacking the 



second tubercular molar. Page 910. 

 Fig. V2. — A portion of the left mandibular ramus of Bunceluriis osoriim, twice natural size, from within ; «, 



the same, outer side ; 6, the same, twice natural size, from above. 

 Fig. 13. — Right mandibular ramus of an immature Bunwliints lagophagus, from within, 1^ times the 



natural size ; 6, the samp, from above. Page 946. 

 Fig. 14. Portion of the left mandibular ramus of an adult Biiiiwhirus Uigophagns, natural .size, viewed 



fi om the outer side. The premolar does not belong to the species. Page 946. 

 Fig. lu. — Dhiktin squalklens, right ramus of mandible, with superior canine, exterior view, natural 



size ; n, superior canine view of inner side of crown; 6, superior view of ramus ; c, base of canine, 



from above. Page 979. 

 Fig. 16. —Right mandibular ramus of probably the same species, external view, natural size ; 6, from 



above. 

 Fig. 17. — Portion of right mandibular ramus of a young individual of a Hoplophoneus, ou which the 



H. orcodoHfis was proposed ; external view, natural size ; ft, from above. Page 993. 



