PLATE XX I X/. 



Bones of tbo skeleton of I'henacodus rorlinaiii figured on tbo preceding plate, natural size. 

 Fig. 1. — Skull from above, uatiiral size, tbo original somowbat distorted; a, the same, from below. 

 Fig. 2. — Tbo alias, from i^elow ; a, posterior view. 

 Fig. ^>. — Tbo axis, from bolow ; a, anterior view. 



Fi}r. 4. — Tbe third cervical vertebrae, from bolow ; a, irom front ; b, from liehind. 

 fig. f). — The fourth cervical vertebra;, from below. 

 Fig. 6. — The fifth cervical vertebra;, from bolow ; n, troin IVoi c. 

 Fig. 7. — The sixth cervical vertebrae ; a. from front. 

 Fig. f*. — Huj.."ru8, proximal view ; a, distal view. 

 Fig. 9. — Ulna and radius, anterior view ; o, distal view 

 Fig. 10. — Right ilium, anterior view, 

 i'lg. 11. — Femur proximal and a distal views. 

 Fig. Vi. — Lcf' tibia, from front ; a, proximal view 

 Fig. 13. — Lc't astragalus, ii.temal view ; a, inffiior view ; b, distal view. 



t •. ; 



