CASE— AMPHIBIA AND PISCES 



1-4. Me^alkhihys niiidus {Co'pe); natural size. Texas. 



1. Vertebrae with neural spines. 



2. Incomplete vertebral rings. 



3. Flank scales of type specimen. No. 7239 Am. Mus. 



4. Pectoral fin of type specimen. No. 7239 Am. Mus. 

 5, 5a. Fragment of a spine belonging to (.'') Hybodus. 



X V-A. Texas. No. 7263 Am. Mus. 



6, 6<;. Cienacanthiis a)iiblyxip/iias {Co\>e). 

 7282 Am. Mus. 



X 1%. No. 



7. Scale of Platysoiiius palniaris (Cope), of about 



three times the natural size. 



8. Diacranodus platypterniis (Cope). Posterior 



portion of right meckelian cartilage, in outer 

 view. X%. Cotype. Texas. No. 7243 Am. Mus. 



9. Diacranodus texensis (Cope). Left meckelian 



cartilage slightly defective at posterior extrem- 

 ity; in outer view. X %. Texas. Am. Mus. 

 9b. Articulating surface of the meckelian cartilage 

 seen from above. 



