40 PLATE XIX. [Assembly 



Fossils of the Catskill group and Carboniferous conglomerate. 



1. MODIOLA? CATSKILLENSIS. 



2. MODIOLA? ANGUSTA. 



3. Same, back of shell. 



4. Cypricardites? rhombea. 



5. Same. 



8. Scale of fisli ( Holoptychius). 



9 Do. ( Holoptychius taylori). 



10. Do. do. 



11. Tooth of fish. 



( Thz above, from thz Catskill group, p 70.) 



6. piuomphalus depressus. 



7. Cypricardites contracta. 



( From thz Conglomerate, p. 71 ) 





