L^ST OF PLATES. 



*i Tde numbers on the left hand indicate the figures on the plates, and those on the right refer to ihe pages containing the detailed- 



d ;3cription of the several specimens. 



Fig. Pag. 

 Plate 1. 



1 Arthrophycus harlani 5 



Plate 2. 



1 Arthrophycus harlani 5 



2 — ? 6 



3 Scolitlius verticalis 6 



Plate 3. 



1 Dictuolites beckii 6 



2 Palseophycus tortuosus ... 6 



3 Fucoides auriformis 7 



4 — hcterophjllus .... 7 



FI.ATE 4. 



1 Chsetetes 1 7 



2 Lingula cuneata 8 



4, 5 Atrypa oblata 9 



6 — plicata 10 



7 Murchisonia? conoidea 13 



8 Cytherina cylindrica 14 



Plate 4 (bis). 



1 Modiolopsis orthoDota .... W 



2 — ? primigenius 11 



3 Pleurotomaria? pervetusta. 12 



4 — litorea 12 



5 Bucania trilobatus 13 



6 Oncoceras gibbosum 13 



7 Orthoceras 14 



8 — multiseptum 14 



Plate 5. 



1 Buthotrephis gracilis 18 



2 — — var. intermedia, 19 



3 — — var. erassa ... 19 



Plate 5 a. 



1 Buthotrephis gracilis? 20 



[ Paljeontology — Vol. ii 



Fig. 



1 



2 

 3 



1 



2 



Pag. 

 Plate 6. 



Buthotrephis palmata 20 



— impudica 20 



— ramosa 21 



Plate 7. 



Buthotrephis palmata 20 



Eoots of Buthotrephis 21 



Plate 8. 



1 Rusophycus clavatus 23 



2 — subangulatus 23 



3 Palseophycus ? 22 



4, 5 Roots of Plants. 25 



6 Rusophycus pudicus 24 



Plate 9. 

 1,2,3 Rusophycus bilobatus . . 24 



4 Stems of a marine plant ... 25 



Plate 10. 



1 Palasophycus? striatus .... 22 



2,3 — ? 22 



4, 5, 6, 8 Roots and stems of 



plants, 25 



7 Ichnophycus tridactylus ... 26 

 9, 10 Roots of Buthotrephis . . 21 



Plate 11. 

 1, 2, 3, 4 Trails of Gasteropoda, 27 



Plate 12. 

 1, 2, 3, 4 Trails of Gasteropoda, 29 



Plate 13. 

 1 , 2 Trails of Annelida 30 



Plate 14. 



1, 2, 3 Trails of Annelida? 31 



4 Trails of small gasteropoda, 31 

 ] 47 



Fig. Pag. 

 Plate 15. 



1-6 Trails of Crustacea? 35 



Plate 16. 

 1-4 Tracks of Crustacea or 



Fishes, 36 



Plate A 17. 



1 Graptolithus clintonensis . . 39 



2 — venosus 40 



Plate 17. 



1 Chsetetes lycoperdon 40 



2 Favistella favosidea 41 



3 Caninia bilateralis 41 



4 Cyclolites rotuloides 42 



Plate 18. 



1 Cannapora junciformis ..... 43 



2 Catenipora escharoides .... 44 



3 Helopora fragilis 44 



4 Stictopora erassa 45 



5 — raripora 46 



6 Phaenopora explanata 46 



7 — constellata 47 



8 — ensiformis 48 



Plate 19. 



1 Rhinopora verrucosa 48 



2 — tubulosa 49 



3 Retepora angulata 49 



4 Fenestella prisca? 50 



5 — tenuis 51 



Plate 20. 



1 Lingula oblonga 54 



2 — oblata 54 



3 — perovata 55 



4 — lamellata 55 



5 — acutirostra 66 



