PLATE IX. 



ODONTOBNETHES. 

 Ribs and Uncinate processes of Hespeeoejstis eegalis Marsh. 



All Figures Natural Size. Page. 



Fig. 1. — First articulated rib ; from the left side, exterior view, 63 



Fig. 2. — Second articulated rib ; " " " " 63 



Fig. 3. — Third articulated rib ; " " " " 63 



u — Articular surface for first uncinate process. 



Fig. 4. — Fourth, or first true dorsal, rib ; from the left side, exterior view, - - 64 



Fig. 5. — Fifth rib ; from the left side, exterior view, . . 64 



Fig. 6.— Sixth rib; " " " " 64 



Fig. 7. — Seventh rib ; " " " " 65 



Fig. 8.— Eighth rib ; " " " " . . . r 65 



u — Articular surface for last uncinate process. 



Fig. 9. — Ninth rib ; from the left side, exterior view, 65 



Fig. 10. — First uncinate process; from left side, articulating with third rib at the point 



marked %i, exterior view, _. 64 



Fig. 11. — Second uncinate process ; from left side, exterior view, - 64 



Fig. 12. — Third uncinate 

 Fig. 13. — Fourth uncinate process 

 Fig. 14. — Fifth uncinate process ; 

 Fig. 15. — Sixth uncinate process ; 

 Fig. 16. — First sternal rib ; articulatir. 



< " « » 64 



" 64 



» 65 



" „_ 65 



g with first true dorsal rib, from left side, exterior view,.. 66 



Fig. 17. — Second sternal rib ; from left side, external view, 66 



Fig. 18.— Third sternal rib; " " " " 66 



Fig. 19. — Fourth sternal rib ; " 

 Fig. 20.— Fifth sternal rib : " 



