360 



PALEONTOLOGY OF NEW-YOKK. 



Fis. Pag. 



Plate 20. 



6 Orthis circulus 56 



7 — elegantula? var... 57 



8 — . trinucleus 58 



9 — tenuidens 58 



10 Atrypa gibbosa 79 



Plate 21 . 



1 Leptasna sericea 59 



2 — corrugata 59 



3 — patenta 60 



4 — profunda 61 



5 — — ? 61 



6 — obscura 62 



7 — orthididea 62 



8 — depressa 62 



9 Strophodonta prisca 63 



10 Chonetes cornuta 64 



Plate 22. 



1 Spirifer biforatus, var. lynx, 65 



2 —' radiatus 66 



3 — 66 



Plat^ 23. 



1 Atrypa congesta 67 



2 — quadricostata .... 68 



3 — bidens 69 



4 — neglecta 70 



5 — equiradiata 70 



6 — emacerata 71 



7 — robusta 71 



8 — reticularis........ 72 



9 — plicatula ........ ... 74 



10 — hemispherica 74 



11 ^^ plano-convexa . . . . 75 



Plate 24. 



. 1 Atrypa naviformis 76 



2 — cylindrica 76 



8,4 — intermedia 77 



5 — 78 



6 -^ cylindrical 78 



7 Pentamerus fornicatus. 81 



PiATE 25. 



1 Pentamerus oblongus 79 



Plate 26. 



1 Pentamerus oblongus 79 



Plate 27. 



1 Avicula emacerata 83 ' 



2 — rhomboidea 84 



Fig. Pag. 



Plate 27. 



3, 12 PyrenomcEUS cuneatus ... 87 



4 Posidonia? alata 87 



5, 6 Modiolopsis subalatus 84 



7 Tellinomya lata 85 



8, 9 — macligeriformis. . . . 85 



10, 13 — curta 86 



11 Orthonota curta 86 



Plate 28. 



1 Cyclonema cancellata 90 



2 — ventricosa 90 



3 — (?) obsoleta 90 



4 Platyostoma 91 



5 Cyclonema cancellata? 91 



7 Murcliisonia subulata 91 



8 Bucania stigmosa 92 



9 — (?) bellapuncta 93 



10 — trilobata 93 



11 Oncoceras subrectum 91 



12 Cornulites flexuosus 98 



13 Discosorus conoideus 99 



Plate 29. 



1 Ormoceras vertebratum ... 94 



2 Orthoceras virgulatum .... 96 



3 — annula turn ?..... . 96 



4 — abruptum 97 



Plate 30. 



1 Myalina mytiliformis 100 



2 Modiolopsis ovatus 101 



3 — subcarinatus 101 



4 Tellinomya elliptica 102 



5 Cyricardia? 102 



Plate 31. 



1 Pentamerus ovalis 103 



2 Lepteena obscura? 103 



3 Platyostoma 103 



4 Orthoceras clavatum 104 



5 Homalonotus delphinocepha- 



lus, 104 



6 Ichtbyodorulite (fragment) , 104 



7 Fragment of rib 105 



Plate 32. 



1 Streptelasma calicula Ill 



2 Polydilasma turbinatum. . . 112 



3 Caninia bilateralis 113 



4 Conophyllum niagarense . . 114 



Plate 33. 



1 Diplophyllum caBspitosum. . 116 



Fig. Pag. 

 Plate 33. 



2 — — ? 118 



3 Syringopora? multicaulis . . 119 



Plate 34. 



1 Astrocerium venustum .... 120 



2 — parasiticum 122 



Plate 34 a. 



1 Astrocerium pyriforme 12S 



2,3 — constrictum 123 



Plate 34 a (bis). 



4 Favosites niagarensis 12-5 



5 — favosa? 126 



PL.4.TE 35. 



1 Catenipora escLaroides .... 127 



Plate 35 (bis). 



2 Catenipora agglomerata . . . 129 



Plate 3G. 



1 Heliolites elegans 130 



2 — spinipora 131 



Plate 36 a. 



1 Heliolites pyriformis 133 



2 — macrostylus 135 



Plate 37. 



1 Stromatopora concentrica. . 136 



Plate 37 a. 



1 Stromatopora concentrica. . .136 



2 Lichenalia concentrica 171 



Plate 38. 



1 Cladopora seriata 137 



2 — cjespitosa 138 



3 — cervicornis 139 



4, 5 — fibrosa 139 



Plate 39. 



1 Cladopora multipora 140 



2 — macropbora 140 



3 — reticulata 141 



4 Limaria ramulosa 142 



5 — fruticosa? 143 



G — laminata 143 



Plate 40. 



1 Callopora elegantula 144 



2 — florida 146 



3 — laminata 146 



4 — aspera 147 



