Pronser — Hamilton and Chemung Series. 



127 



17. Palceoneilo constricta (Con.), Hall. (r) 



18. Gcmiophora Hamiltonensis, Hall. (r) 



19. Microdon (^Cyprica/rdellcb) bellistriatns, Con. (it) 



20. Mytila/rca (PletJiomytihis) oviformis (Con.), Hall. (r) 



21. (?) Liopteria (very imperfect specimen). (rr) 



22. Phacops rana (Green), Hall. (r) 



23. Loxonenio delphicola, Hall. (rr) 



24. Gomphoceras, sp. (rr) 



25. Portion of a Orinoid stem. (rr) 

 XIX B\ The shales farther east by the side of Mad brook, just above 



the highway bridge, are sixty-two feet by level above the railroad. The rocks 

 are blue, argillaceous (somewhat arenaceous) shales, containing abundant 

 fossils, generally small forms of lamellibranchs and brachiopods, with an 

 occasional large lamellibranch and trilobite. The following species were 

 collected : 



1. Chonetes eoronata (Con.), Hall. (aa) 



2. Chonetes setigera, Hall. (aa) 

 -3. Chonetes scitida, Hall. (?) (r) 

 4. Chonetes lepida, Hall. (rr) 



.. 5. Spirifer mucronatus (Con.), Bill. (aa) 



6. Spirifer granulosus (Con.), Hall and Clarke. (rr) 



7. Spirifer fimbriatus (Con.), Bill. (rr) 



8. Spirifer Tullius, Hall. (?) (rr) 



(A single internal impression of a ventral valve.) 



9. Ambocoelia umbonata (Con.), Hall. (r) 



10. Athyris spiriferoides (Eaton), Hall. (r) 



11. Orthis Vanuxemi, Hall. (r) 



12. Stropheodonta, sp. (internal impression of large valve), (rr) 



13. Orbicidoidea, sp. (rr) 



14. IAmgula, sp. (rr) 



It has the same proportions as L. lig&a, H., though slightly larget- 



15. Pinguid, sp. (rr) 



A broken specimen resembling L. complanata, Williams. 



16. NucuUtes triqueter, Con. (aa) 



17. NucuUtes oblongatus, Con. (r) 



18. Palceoneilo const ricta (Con.), Hall. (a) 



19. Pala'oneilo emarginata (Con.), Hall. (r) 



20. Palceoneilo muta, Hall. (r) 



