INDEX. 



t>yy 



PAGE 



Encrinurus punctatus , 531 



Eridonychia apicalis 639 



crenata 640 



paucicostata 640 



Eurypterus eriensis 416 



Fossils of Clinton group 595 



Gilbertsocrinus spinigerus 447 



Gomphoceras amphora 428 



hyatti 427 



ortom 533 



sciotense 428 



Goniophora dubia 415 



Gorgonicthys clarki 614 



Grammysia bi-sulcata 451 



Gyroceras columbiense 430 



seminodosum 431 



Holopea newtonensis 477 



Illaenus ambignus 525 



daytonensis 525 



insignis 525 



madisonianus 52H 



Ischyrodonta decipiens 673 



elongata 675 



misn eri 675 



modioliformis 676 



ovalis 674 



trun cata 672 



unionoides 677 



Leiorhynchus lirnitaris 444 



Leperditia alta 417 



angulif era 41 S 



Leptaena rhomboidalis 56G 



Lichas breviceps 52.) 



Lingula ligea 441,462 



manni 441 



Lioclema ohioeusis 600 



Loxonema parvulum 424 



plicatum 486 



subulate 556 



Lyrodesma conradi 6*4 



grande 683 



inornatum 682 



subplanum 683 



Macrocheilus priscus 424 



regularis 485 



subcorpulent .s 478 



Meristella bella 412 



laevis 411 



umbonata 590 



Modiolodou declivis 654 



obtusus 654 



oviforn lis 652 



subovalis 655 



subrectus 653 



Modiolopsis rhomboidea 560 



subrhomboidea 560 



Monocladodus clarki 619 



Mytilarca mytiliformis 559 



percarinatus 422 



Naticopsis ortoni 489 



ziczac 477 



PAGE 



Nautilus ortoni 486 



pauper 483 



spectabilis 480 



subquadranguiaris 487 



Nucleospira rotundata 413 



Nuculites ferrugineum 564 



Nyassa arguta : 451 



Opisthoptera alteruata 644 



ampla 647 



casei .. 643 



extenuata 645 



fissicosta 643 



laticostata 646 



uotabilis 64S 



obliqua 646 



Orthis biforata 579 



calligramma 570 



daytonensis 575 



elegantu'a 581 



fausta 574 



hybrida 584 



tioga 453 



Orthoceras amycus 54 > 



clavatum .538 



conoideum 546 



crawf ordi 546 



day tonense 539 



erraticum 54 



Hannoverense 543 



ignotuni 53'.) 



inceptum 543-5 



jamesi 546 



lata-nummulatutn 538 



nova carlislense 545 



nuntium 425 



rectum 539 



spyroceroides 545 



turgido-uummulatum ... 538 



virgulatum 543 



youngi 537 



Ortnodesma parvum 660 



subangulatum 660 



Ortouella hainesi 670 



Pachydictya bifurcata 599 



Palaeoneilo similis 453 



Palaeopalsemon newberryi 461 



Paleopupa abrupta 556 



Pentamerus pesovis 414 



Pentremites elegans 466 



Phacops trisulcatus 529 



Phaenopora expansa 598 



Physetomya acuminata 693 



Pinna maxvillensis 474 



Platyceras niagarense 553-4 



squalodens 423 



Plectambonites transversalis 566 



Pleurotomaria filitexta 550 



inexpectans 549 



Plumulites newberryi 46'-< 



Polyphemopsis melanoides 478 



Polpora varsonviauus 467 



Productus elegans 469 



pileiformis 470 



