LIST OF ILLUSTRATIONS. XVII 



Page. 



3. Right exoccipital of Saniwa ensidens Leidy. Cat. No. 2185, U.S.N.M.,type. 



Natural size. Posterior view 6 



4. Right epipterygoid of Saniwa ensidens Leidy. Type, Cat. No. 2185, 



U.S.N.M. Natural size. Posterior view C 



5. Left lachrymal of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. A, lateral view; B, posterior \dew 8 



6. Right maxillary of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. Lateral view, na, border that contributes to the bound- 

 ary of the external narial opening 8 



7. Right postfrontal of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. Viewed from above, pf, cupped surface which articulates 

 above equally with the lateral projections of the parietal and frontal 9 



8. Articulated left postfrontal and postorbital bones of Saniioa ensidens Leidy. 



Type, Cat. No. 2185, U.S.N.M. Natural size, p, cupped border for 

 articulation with parietal and frontal; po, postorbital; ptf, postfrontal.. 10 



9. Left prootic attached to exoccipital of same side of Saniwa ensidens Leidy. 



Type, Cat. No. 2185, U.S.N.M. Natural size. Lateral view. fa:o, exoc- 

 cipital; pro, prootic 10 



10. Left prefrontal of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size, la, surface for articulation for lachrymal; prf, prefrontal. . 11 



11. Left jugal of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. A, internal \'iew; B, external view; a, anterior end; p, 

 posterior end 11 



12. Left ramus oi Saniwa ensidens Leidy. Type, No. 2185, U.S.N.M. Natural 



size. A, external \'iew; B, internal view; ang, angular; art, articular; 

 C, coronoid; d, dentary; s, splenial; sur, surangular. Anterior end of 

 dentary restored from Varanus 12 



13. Cer\dcal vertebrse of Saniwa ensidens Leidy. Type, Cat. No. 2185, 



U.S.N.M. Natural size, at, atlas; ax, axis; ax in, axis intercentrum; 

 h, hyopophyses; in, intercentrum of atlas; 3, 4, 5, 6, 7, cervicals three to 

 seven, respectively 16 



14. Dorsal vertebrae of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. A, viewed from left side; B, viewed from posterior end; 

 nc, neural canal; s, spinous process; t, transverse process; z, anterior zyga- 

 pophysis; /, posterior zygapophysis 17 



15. Dorsal vertebrse of Saniwa ensidens Leidy. Type, Cat. No. 2185, 



U.S.N.M. Natural size. Superior view, t, transverse process; z, ante- 

 rior zygapophysis; z', posterior zygapophysis; zg, zygantra 17 



16. Dorsal vertebra of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S. N. M. 



Natural size, t, transverse processes; z, anterior zygapophysis; z^, pos- 

 terior zygapophysis 18 



17. Anterior caudal vertebrse of Saniwa ensidens Leidy. Type, Cat. No. 2185, 



U.S.N.M. Natural size. Viewed from left side, h, hyopophysis for 

 articulation of chevron; (, transverse process; z\ posterior zygapophysis. 19 



18. Anterior caudal vertebra of Saniwa ensidens Leidy. Type, Cat. No. 2185, 



U.S.N.M. Natural size. Ventral view, ch, hypophysis for chevron; 



t, transverse process 19 



19. Left coracoid of Saniwa ensidens Leidy. Type, Cat. No. 2185, U.S.N.M. 



Natural size. Ventral view, gc, coracoid contribution to the formation 



of glenoid fossa; sc, border that articulates with scapula 20 



3136— 22— Proe.N.M. Vol.60 2 



